Display device and electronic equipment
View Patent ↗The present application provides a display device and an electronic equipment, the display device includes an application processor, a display driving chip, and a display panel. The display device not only reduces numbers of display data frames that the application processor needs to transmit to the display driving chip but also improves a continuity of picture display of the display panel with a lower bandwidth between the application processor and the display driving chip by additionally generating at least one derived picture data frame between two adjacent native picture data frames.
1. A display device, comprising:
an application processor, the application processor used to output at least two display data frames;
a display driving chip, an input end of the display driving chip connected to an output end of the application processor, for outputting at least two native picture data frames corresponding to the at least two display data frames and at least one derived picture data frame between two adjacent native picture data frames; and
a display panel, connected to an output end of the display driving chip for displaying pictures according to each of the native picture data frames and each of the derived picture data frames;
wherein the display driving chip comprises:
a first memory, the first memory is connected to the application processor for storing an Nth display data frame of the at least two display data frames;
a second memory, the second memory is connected to the application processor for storing an (N+1)th display data frame of the at least two display data frames;
a comparator, the comparator is connected to the first memory and the second memory for comparing a picture difference degree between the Nth display data frame and the (N+1)th display data frame and outputting a comparison result of the picture difference degree and a preset threshold; and
a display driver, an input end of the display driver is connected to an input end of the first memory, an input end of the second memory, and an output end of the comparator;
wherein the comparator comprises:
a first comparison unit, a first input end of the first comparison unit is connected to the first memory, and a second input end of the first comparison unit is connected to the second memory; and
a second comparison unit, a first input end of the second comparison unit is connected to an output end of the first comparison unit, a second input end of the second comparison unit is connected to a reference end corresponding to the preset threshold, and an output end of the second comparison unit is connected to an input end of the display driver;
wherein in response to the picture difference degree being greater than the preset threshold or the picture difference degree being equal to zero, the display driver sequentially outputs the Nth native picture data frame, the at least one derived picture data frame, and the (N+1)th native picture data frame; and a picture to be displayed corresponding to the at least one derived picture data frame is same as at least one of a picture to be displayed corresponding to the Nth native picture data frame and a picture to be displayed corresponding to the (N+1)th native picture data frame.
2. The display device as claimed in claim 1 , wherein a first input end of the comparator is connected to an output end of the first memory, a second input end of the comparator is connected to an output end of the second memory, and an output end of the comparator is connected to an input end of the display driver.
3. The display device as claimed in claim 1 , wherein in response to the picture difference degree being less than or equal to the preset threshold and the picture difference degree being greater than zero, the display driver sequentially outputs the Nth native picture data frame, the at least one derived picture data frame, and the (N+1)th native picture data frame; and a picture to be displayed corresponding to the at least one derived picture data frame is different from a picture to be displayed corresponding to the Nth native picture data frame and a picture to be displayed corresponding to the (N+1)th native picture data frame.
4. The display device as claimed in claim 1 , wherein a picture to be displayed corresponding to a former part of a frame in the at least one derived picture data frame is same as the picture to be displayed corresponding to the Nth native picture data frame, and a picture to be displayed corresponding to a latter part of the frame in the at least one derived picture data frame is same as the picture to be displayed corresponding to the (N+1)th native picture data frame.
5. The display device as claimed in claim 1 , wherein a range of the preset threshold is greater than zero and less than or equal to 40%.
6. The display device as claimed in claim 1 , wherein the first comparison unit is configured to compare the Nth display data frame with the (N+1)th display data frame to obtain the picture difference degree; and the second comparison unit is configured to compare the picture difference degree with the preset threshold to obtain the comparison result.
7. The display device as claimed in claim 1 , wherein a data transmission frame rate between the application processor and the display driving chip is set to K Hz, a refresh frequency of the display panel is J Hz, and a result of dividing J by K is L; and the at least one derived picture data frame is [L−1] derived picture data frames, wherein [L−1] is value after L−1 is rounded.
8. The display device as claimed in claim 7 , wherein the data transmission frame rate is less than the refresh frequency.
9. An electronic equipment, comprising the display device as claimed in claim 1 , wherein the application processor communicates serially with the display driving chip.
10. The electronic equipment as claimed in claim 9 , wherein a first input end of the comparator is connected to an output end of the first memory, a second input end of the comparator is connected to an output end of the second memory, and an output end of the comparator is connected to an input end of the display driver.
11. The electronic equipment as claimed in claim 9 , wherein in response to the picture difference degree being less than or equal to the preset threshold and the picture difference degree being greater than zero, the display driver sequentially outputs the Nth native picture data frame, the at least one derived picture data frame, and the (N+1)th native picture data frame, and a picture to be displayed corresponding to the at least one derived picture data frame is different from a picture to be displayed corresponding to the Nth native picture data frame and a picture to be displayed corresponding to the (N+1)th native picture data frame.
12. The electronic equipment as claimed in claim 9 , wherein a picture to be displayed corresponding to a former part of a frame in the at least one derived picture data frame is same as the picture to be displayed corresponding to the Nth native picture data frame, and a picture to be displayed corresponding to a latter part of the frame in the at least one derived picture data frame is same as the picture to be displayed corresponding to the (N+1)th native picture data frame.
13. The electronic equipment as claimed in claim 9 , wherein a range of the preset threshold is greater than zero and less than or equal to 40%.
14. The electronic equipment as claimed in claim 9 , wherein the first comparison unit is configured to compare the Nth display data frame with the (N+1)th display data frame to obtain the picture difference degree; and the second comparison unit is configured to compare the picture difference degree with the preset threshold to obtain the comparison result.
15. The electronic equipment as claimed in claim 9 , wherein a data transmission frame rate between the application processor and the display driving chip is set to K Hz, a refresh frequency of the display panel is J Hz, and a result of dividing J by K is L; the at least one derived picture data frame is [L−1] derived picture data frames, wherein [L−1] is value after L−1 is rounded.
16. The electronic equipment as claimed in claim 15 , wherein the data transmission frame rate is less than the refresh frequency.