IP Library › Granted Patent US 10,192,476
Granted Patent B2
US 10,192,476 · App. 15/244,459 · Granted Jan 29, 2019

Operating module for display and operating method, and electronic device supporting the same

Inventors: Jong Kon Bae (Seoul, KR); Dong Hui Kim (Gyeonggi-do, KR); Dong Kyoon Han (Gyeonggi-do, KR); Tae Sung Kim (Gyeonggi-do, KR)
Assignee: Samsung Electronics Co., Ltd.
G09G3/2096G09G3/3275G09G3/3666G09G3/3688G09G2310/0286G09G2310/0291G09G2320/103G09G2330/021
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Quick Facts
Patent No.
US 10,192,476
App. No.
15/244,459
Granted
Jan 29, 2019
Kind
B2
Abstract

An electronic device is provided. The electronic device may include a display driver module configured to, in response to receiving display data, divide the display data into a plurality of segments corresponding to a plurality of display regions, compare the display data in the plurality of segments to determine whether the display data in at least one segment is substantially same as the display data in another segment, and based on the comparison outcome, selectively amplify a first display signal generated from the display data in the at least one segment or a second display signal generated from the display data in the another segment.

Claims (43)

1. An electronic device comprising a display driver configured to:

in response to receiving display data, divide the display data into a plurality of segments corresponding to a plurality of display regions;

compare the display data in the plurality of segments to determine whether the display data in at least one segment is substantially same as the display data in another segment; and

based on the comparison outcome, selectively amplify a first display signal generated from the display data in the at least one segment or a second display signal generated from the display data in the another segment,

wherein the display driver comprises:

a data latch configured to transmit stored line data to a source driver;

data shift registers configured to sequentially transmit shifted line data to the data latch;

a logic circuit block including a data comparison circuit configured to compare the display data to be provided to the data shift registers,

wherein the data shift registers is grouped into groups of a certain number of members for each channel corresponding to each sub pixel,

wherein the source driver comprises:

source pads connected to output stages of amplifiers associated with each segment,

switches disposed between each output stage and each source pad, and

a MUX connected to the switches, and

wherein the display driver is configured to control the plurality of segments through the MUX.

2. The electronic device of claim 1 , wherein the display driver is further configured to display the amplified first display signal in a first display region corresponding to the at least one segment when the display data in the at least one segment is not substantially same as the display data in another segment.

3. The electronic device of claim 2 , wherein the display driver is further configured to display the amplified second display signal in the first display region and a second display region corresponding to the another segment when the display data in the at least one segment is substantially same as the display data in another segment.

4. The electronic device of claim 1 , wherein the display driver is further configured to, when the display data in the at least one segment is substantially same as the display data in another segment, disable a first amplifier associated with the at least one segment.

5. The electronic device of claim 4 , wherein the display driver is further configured to, when the display data in the at least one segment is substantially same as the display data in another segment, enable a second amplifier associated with the another segment while the first amplifier is disabled.

6. The electronic device of claim 5 , wherein the display driver is further configured to supply an output from the second amplifier to an output stage of the first amplifier.

7. The electronic device of claim 1 , further comprising a memory for each segment of display data.

8. The electronic device of claim 1 , wherein the display driver is further configured to output comparison value information associated with the at least one segment, the comparison value information representing the comparison outcome.

9. The electronic device of claim 1 , wherein each segment corresponds to a pixel or sub-pixel of a display of the electronic device.

10. The electronic device of claim 1 , further comprising:

a channel selection switch disposed between the output stage of the amplifier associated with the at least one segment and the source pad associated with the another segment.

11. The electronic device of claim 10 , wherein the display driver is further configured to display the amplified second display signal in a first display region and a second display region by turning on the channel selection switch.

12. A display driver comprising:

a plurality of amplifiers configured to amplify a display signal generated from display data divided into a plurality of segments to be supplied to each signal line of a display panel;

a data latch configured to transmit stored line data to a source driver;

data shift registers configured to sequentially transmit shifted line data to the data latch; and

a logic circuit block including a data comparison circuit configured to compare the display data to be provided to the data shift registers,

wherein the data shift registers is grouped into groups of a certain number of members for each channel corresponding to each sub pixel,

wherein the data comparison circuit is configured to compare the display data in the plurality of segments to determine whether the display data in at least one segment is substantially same as the display data in another segment;

wherein when the display data in the at least one segment is not substantially same as the display data in another segment, the logic circuit block is further configured to amplify the display signals generated from the display data from the at least one segment and the another segment using the plurality of amplifier,

wherein when the display data in the at least one segment is substantially same as the display data in another segment, the logic circuit block is further configured to enable a first amplifier associated with the another segment and disable a second amplifier associated with the at least one segment,

wherein the source driver comprises:

source pads connected to output stages of amplifiers associated with each segment,

switches disposed between each output stage and each source pad, and

a MUX connected to the switches, and

wherein the display driver is configured to control the plurality of segments through the MUX.

13. The display driver of claim 12 , further comprising:

a memory for each segment of display data,

wherein the logic circuit block is configured to output comparison value information associated with the at least one segment, the comparison value information representing a result of the comparison, and

wherein each segment corresponds to a pixel or sub-pixel of a display of an electronic device.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 23, 2016
From: BAE, JONG KON; KIM, DONG HUI; HAN, DONG KYOON; KIM, TAE SUNG
To: SAMSUNG ELECTRONICS CO., LTD.
Reel/Frame 039510/0294 →
Priority Claims (1)
KR 10-2015-0120070 · Aug 26, 2015 · national
Continuity (1)
Related Publication 20170061869A1 · Mar 2, 2017