IP Library › Granted Patent US 11,817,052
Granted Patent B2
US 11,817,052 · App. 16/318,859 · Granted Nov 14, 2023

Organic light-emitting display panel and display method therefor

Inventor: Lijun Zhao (Beijing, CN)
Assignee: BOE Technology Group Co., Ltd.
G09G3/3233G09G2300/0819G09G2300/0852G09G2300/0861G09G2310/08G09G2320/0233G09G2320/0242G09G2320/041
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Quick Facts
Patent No.
US 11,817,052
App. No.
16/318,859
Granted
Nov 14, 2023
Kind
B2
Abstract

Disclosed are an organic light-emitting display panel and a display method thereof. The temperature of the organic light-emitting display panel can be detected in a pre-set detection period by arranging a temperature detection and compensation module, when it is determined that the temperature of the organic light-emitting display panel is not within a pre-set temperature range, a temperature compensation voltage corresponding to the organic light-emitting display panel is determined according to the detected temperature of the organic light-emitting display panel; and when each light-emitting device emits light, the determined temperature compensation voltage is applied to an anode of the light-emitting device that emits light so as to carry out voltage compensation on an anode voltage of the light-emitting device.

Claims (32)

1. An organic light-emitting display panel, comprising a plurality of light-emitting elements, wherein the organic light-emitting display panel further comprises: a temperature detection and compensation module electrically connected to anodes of the respective light-emitting elements;

the temperature detection and compensation module is configured to: detect a temperature of the organic light-emitting display panel during a pre-set detection period, to determine a temperature compensation voltage corresponding to the organic light-emitting display panel according to the temperature detected by the temperature detection module when it is determined that the temperature of the organic light-emitting display panel is not within a pre-set temperature range, and to apply the temperature compensation voltage as detected to the anodes of the light-emitting elements when the organic light-emitting elements emit light;

the temperature detection and compensation module comprise: a signal input sub-module, a voltage storage sub-module, a data processing sub-module, and compensation input sub-modules having a same number as that of the light-emitting elements, and each of the compensation input sub-modules is connected to the anode of the corresponding one of the light-emitting elements;

the signal input sub-module is connected to the data processing sub-module, the voltage storage sub-module and the compensation input sub-modules, and the signal input sub-module is configured to provide a temperature detection signal outputted by the data processing sub-module to the voltage storage sub-module during the pre-set detection period, and to provide a temperature compensation voltage output by the data processing sub-module to the compensation input sub-modules when the respective light-emitting devices emits light;

the voltage storage sub-module is further connected to a ground end, and is configured to be charged or discharged under a control of the ground end and the temperature detection signal as received;

the data processing sub-module is further connected to the voltage storage sub-module, and is configured to: output the temperature detection signal, to detect a discharge time of the voltage storage sub-module when the voltage storage sub-module is discharged, to determine the temperature of the organic light-emitting display panel according to the discharge time as detected, to determine the temperature compensation voltage corresponding to the organic light-emitting display panel according to the temperature as detected when it is determined that the temperature of the organic light-emitting display panel is not within the pre-set temperature range, and to apply the temperature compensation voltage as determined to the anodes of the respective light-emitting elements through the compensation sub-modules corresponding to the respective light-emitting elements;

each of the compensation input sub-modules is configured to input the temperature compensation voltage as detected to the anode of the light-emitting element connected therewith when the light-emitting element connected therewith emits light.

2. The organic light-emitting display panel according to claim 1 , wherein the signal input sub-module, the voltage storage sub-module, and the compensation input sub-modules are located in a display region of the organic light-emitting display panel.

3. The organic light-emitting display panel according to claim 2 , wherein the display region comprises a plurality of pixel units, one voltage storage sub-module and one signal input sub-module, each of the pixel units comprises one light-emitting element and one compensation input sub-module.

4. The organic light-emitting display panel according to claim 3 , wherein the data processing sub-module is configured to detect a discharge time of the voltage storage sub-module when the voltage storage sub-module is discharged, to determine a temperature of the display region according to the discharge time as detected, to determine a temperature compensation voltage corresponding to the display region according to the temperature as detected when it is determined that the temperature of the display region is not within the pre-set temperature range, and to apply the temperature compensation voltage as determined to the anodes of the respective light-emitting elements through the compensation input sub-modules corresponding to the respective light-emitting elements.

5. The organic light-emitting display panel according to claim 2 , wherein the display region comprises a plurality of display sub-regions, each of the display sub-regions comprises: at least one pixel unit, one voltage storage sub-module, and one signal input a sub-module; each pixel unit comprises one light-emitting element and one compensation input sub-module.

6. The organic light-emitting display panel according to claim 5 , wherein the data processing sub-module is configured to detect a discharge time of the voltage storage sub-module in the respective display sub-regions when the voltage storage sub-module in the respective display sub-regions is discharged, to determine a temperature corresponding to each of the display sub-regions according to the discharge time as detected of each of the voltage storage sub-module, to determine a temperature compensation voltage corresponding to the respective display sub-regions according to the temperature corresponding to each of the display sub-regions when it is determined that the temperature as detected of each of the display sub-pixels is not within the pre-set temperature range, and to supply the temperature compensation voltage as determined to the anodes of the respective light-emitting element through the compensation input sub-modules corresponding to the respective light-emitting elements.

7. The organic light-emitting display panel according to claim 1 , wherein the signal input sub-module comprises: a first switching transistor; wherein

a control electrode of the first switching transistor is connected to an input control signal terminal, a first electrode of the first switching transistor is connected with the data processing sub-module, and a second electrode of the first switching transistor is connected to the voltage storage sub-module and the compensation input sub-modules.

8. The organic light-emitting display panel according to claim 1 , wherein the compensation input sub-module comprises: a second switching transistor; wherein

a control electrode of the second switching transistor is connected to a compensation control signal terminal, a first electrode of the second switching transistor is connected to the signal input sub-module, and a second electrode of the second switching transistor is connected to the anode of the corresponding one of the light-emitting elements.

9. The organic light-emitting display panel according to claim 1 , wherein the voltage storage sub-module comprises: a first capacitor; wherein

a first end of the first capacitor is connected to the signal input sub-module and the data processing sub-module, and a second end of the first capacitor is connected to a ground end.

10. A display method for the organic light-emitting display panel according to any one of claim 1 , the organic light-emitting display panel comprising a plurality of light-emitting elements, wherein the display method comprises:

detecting a temperature of the organic light-emitting display panel during a pre-set detection period;

when the temperature of the organic light-emitting display panel is not within a pre-set temperature range, determining a temperature compensation voltage corresponding to the organic light-emitting display panel according to the temperature detected by the temperature detection and compensation module; and

supplying the temperature compensation voltage as determined to anodes of the light-emitting elements when the light-emitting elements emit light.

11. The display method according to claim 10 , wherein detecting the temperature of the organic light-emitting display panel during the pre-set detection period comprises:

supplying a temperature detection signal to the voltage storage sub-module during the pre-set detection period to charge and discharge the voltage storage sub-module; detecting a discharge time of the voltage storage sub-module when the voltage storage sub-module is discharged; and determining the temperature of the organic light-emitting display panel according to the discharge time as detected.

12. The display method according to claim 11 , wherein supplying the temperature compensation voltage as determined to the anodes of the light-emitting elements comprises: supplying the temperature compensation voltage as determined to the anodes of the light-emitting elements that are emitting light through the compensation input sub-modules corresponding to the light-emitting elements that are emitting light.

13. The display method according to claim 10 , wherein supplying the temperature compensation voltage as determined to the anodes of the light-emitting elements comprises: supplying the temperature compensation voltage as determined to the anodes of the light-emitting elements that are emitting light through the compensation input sub-modules corresponding to the light-emitting elements that are emitting light.

14. The organic light-emitting display panel according to claim 1 , wherein the signal input sub-module comprises: a first switching transistor; wherein

a control electrode of the first switching transistor is connected to an input control signal terminal, a first electrode of the first switching transistor is connected with the data processing sub-module, and a second electrode of the first switching transistor is connected to the voltage storage sub-module and the compensation input sub-modules.

15. The organic light-emitting display panel according to claim 1 , wherein the compensation input sub-module comprises: a second switching transistor; wherein

a control electrode of the second switching transistor is connected to a compensation control signal terminal, a first electrode of the second switching transistor is connected to the signal input sub-module, and a second electrode of the second switching transistor is connected to the anode of the corresponding one of the light-emitting elements.

16. The organic light-emitting display panel according to claim 1 , wherein the voltage storage sub-module comprises: a first capacitor; wherein

a first end of the first capacitor is connected to the signal input sub-module and the data processing sub-module, and a second end of the first capacitor is connected to a ground end.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 18, 2019
From: ZHAO, LIJUN
To: BOE TECHNOLOGY GROUP CO., LTD.
Reel/Frame 048097/0905 →
Priority Claims (1)
CN 201710329211.3 · May 11, 2017 · national
Continuity (1)
Related Publication 20230196996A1 · Jun 22, 2023