CN-122024602-A - Display driving chip, testing device and equipment

Abstract

The application provides a display driving chip, a testing device and equipment, which are applied to testing a micro LED display device, wherein the display driving chip comprises an image generating unit, a frame buffer storage unit and a controller; the frame buffer storage unit is used for buffering first target image data, the image generation unit is used for generating the first target image data and generating second target image data and storing the second target image data into the dynamic buffer area, and the controller is used for enabling the micro LED display device to display a third target image based on the first target image data and the second target image data, and the resolution of the third target image is the second resolution. The application reduces the size of the display driving chip by dynamically multiplexing the frame buffer memory unit without increasing the area of the frame buffer memory unit.

Inventors

• PANG WEIQU
• ZHU KAISONG
• ZHANG KE
• HUANG LI
• LIANG JINBO

Assignees

• 深圳市思坦科技有限公司

Dates

Publication Date

20260512

Application Date

20241112

Claims (20)

1. 1. The display driving chip is characterized by being applied to testing a micro LED display device and comprising an image generating unit, a frame buffer storage unit and a controller; The frame buffer storage unit is used for buffering first target image data, wherein the data volume of the first target image data is smaller than or equal to the image data volume corresponding to a first resolution, and the first resolution is the image resolution of a display image in the micro LED display device; The image generation unit is used for generating the first target image data, storing the generated first target image data into the frame buffer storage unit, wherein one part of the image data of the first target image data is stored in a dynamic buffer area of the frame buffer storage unit, and the other part of the image data of the first target image data is stored in a non-dynamic buffer area of the frame buffer storage unit; And Generating second target image data, and after the image data stored in the dynamic cache area part in the first target image data is sent to the micro LED display device, storing the second target image data in the dynamic cache area in the frame cache storage unit; The controller is used for sending the first target image data in the frame buffer storage unit to the micro LED display device, then sending the second target image data in the dynamic buffer area to the micro LED display device, and presenting a third target image on the micro LED display device based on the first target image data and the second target image data, wherein the resolution of the third target image is a second resolution, and the second resolution corresponds to the full-screen image resolution of the micro LED display device.
2. 2. The chip of claim 1, wherein the second resolution is greater than the first resolution.
3. 3. The chip of claim 2, wherein the first target image data and the second target image data are partitioned based on bit planes to generate a plurality of image bit plane data, each of the image bit plane data comprising corresponding bit plane data of the first and second target image data; And the controller is used for reading each image bit plane data so as to enable the micro LED display device to display the third target image.
4. 4. A chip according to claim 3, wherein the controller reads target bit-plane data of image data, which is any one of a plurality of the image bit-plane data, by: Reading target bit plane data in the first target image data in the frame buffer memory unit; and if the reading of the target bit plane data in the first target image data in the frame buffer storage unit is completed, reading the target bit plane data in the second target image data from the dynamic buffer area.
5. 5. The chip of claim 4, wherein the controller is further configured to generate a hint message; and the image generating unit is used for responding to the prompt information and writing target bit plane data in the second target image data into the dynamic buffer area.
6. 6. The chip of claim 4, wherein the hint information is generated when reading of target bit-plane data among the first target image data stored in the dynamic cache unit is complete during the controller reads target bit-plane data among the first target image data in the frame cache memory unit; Or (b) The prompt information is generated after the controller reads target bit plane data in the first target image data in the frame buffer memory storage unit.
7. 7. The chip according to any one of claims 3 to 6, wherein the frame buffer storage unit includes a plurality of identical frame buffer blocks, the first target data includes a plurality of first target image segment data, and each of the frame buffer blocks stores corresponding first target image segment data, respectively; the controller is used for reading the target bit plane data of the first target image fragment data stored in each frame buffer block in parallel.
8. 8. The chip of claim 7, wherein the second target data comprises a plurality of second target image segment data, and the dynamic cache area of each frame cache block stores the corresponding second target image segment data, respectively; The controller is also used for reading the target bit plane data of the second target image fragment data stored in the dynamic storage area of each frame buffer block in parallel.
9. 9. The chip according to claim 7, wherein the first target image data is generated based on an image generating unit, the number of the image generating units being one, the image generating unit writing the first target image fragment data into the corresponding frame buffer block; Or (b) The number of the image generating units is multiple, the image generating units are in one-to-one correspondence with the frame buffer blocks, and each image generating unit generates the corresponding first target image fragment data.
10. 10. The chip according to claim 7, wherein the number of the image generating units is one, and the image generating units write target bit-plane data of the corresponding second target image segment data into the corresponding frame buffer blocks; Or (b) The number of the image generating units is multiple, the image generating units are in one-to-one correspondence with the frame buffer blocks, and each image generating unit generates the second target image fragment data.
11. 11. The chip of claim 1, wherein the number of lines of the first target image is M lines in a full screen of the micro LED display device, the number of lines of resolution of the third target image is N, and the second target image data is used to generate a second target image, the second target image being N-M lines of the third target image from which the first target image is removed; the first target image is generated based on the first target image data and the second target image is generated based on second target image data.
12. 12. The display driving method is applied to a display driving chip, and the display driving chip is applied to test a micro LED display device and is characterized by comprising an image generating unit, a frame buffer storage unit and a controller; The frame buffer storage unit buffers first target image data, wherein the data volume of the first target image data is smaller than or equal to the image data volume corresponding to a first resolution, and the image resolution of a middle display image of the first resolution micro LED display device; The image generation unit is used for generating the first target image data, storing the generated first target image data into the frame buffer storage unit, wherein one part of the image data of the first target image data is stored in a dynamic buffer area of the frame buffer storage unit, and the other part of the image data of the first target image data is stored in a non-dynamic buffer area of the frame buffer storage unit; And Generating second target image data, and after the image data stored in the dynamic cache area part in the first target image data is sent to the micro LED display device, storing the second target image data in the dynamic cache area in the frame cache storage unit; After the controller sends the first target image data in the frame buffer storage unit to the micro-LED display device, the second target image data in the dynamic buffer area is sent to the micro-LED display device, a third target image is presented on the micro-LED display device based on the first target image data and the second target image data, the resolution of the third target image is a second resolution, and the second resolution corresponds to the full-screen image resolution of the micro-LED display device.
13. 13. The method of claim 12, wherein the second resolution is greater than the first resolution.
14. 14. The method of claim 13, wherein the first target image data and the second target image data are partitioned based on bit planes to generate a plurality of image bit plane data, each of the image bit plane data comprising corresponding bit plane data in the first and second target image data; the controller reads each of the image bit plane data to cause the micro LED display device to display the third target image.
15. 15. The method of claim 14, wherein the controller reads target bit-plane data of image data, the target bit-plane data of image data being any one of a plurality of the image bit-plane data: Reading target bit plane data in the first target image data in the frame buffer memory unit; and if the reading of the target bit plane data in the first target image data in the frame buffer storage unit is completed, reading the target bit plane data in the second target image data from the dynamic buffer area.
16. 16. The method of claim 15, wherein the step of determining the position of the probe is performed, The read frame buffer memory unit is used for buffering target bit plane data in the first target image data; To the point of If the reading of the target bit plane data in the first target image data in the frame buffer storage unit is completed, the process of reading the target bit plane data in the second target image data from the dynamic buffer area includes: the controller also generates prompt information; And the image generation unit responds to the prompt information and writes target bit plane data in the second target image data into the dynamic buffer.
17. 17. The method of claim 16, wherein the step of determining the position of the probe comprises, The prompt information is generated when the target bit plane data in the first target image data stored in the dynamic cache unit is read in the process that the controller reads the target bit plane data in the first target image data in the frame cache storage unit; Or (b) The prompt information is generated after the controller reads target bit plane data in the first target image data in the frame buffer memory storage unit.
18. 18. The method according to any one of claims 14 to 17, wherein the frame buffer storage unit includes a plurality of identical frame buffer blocks, the first target data includes a plurality of first target image segment data, and each of the frame buffer blocks stores corresponding first target image segment data, respectively; the controller reads the target bit plane data of the first target image segment data stored in each frame buffer in parallel.
19. 19. The method of claim 18, wherein the second target data comprises a plurality of second target image segment data, the dynamic cache region of each frame cache block storing a corresponding second target image segment data, respectively; The controller reads the target bit plane data of the second target image segment data stored in the dynamic storage area of each frame buffer in parallel.
20. 20. The method according to claim 18, wherein the first target image data is generated based on an image generation unit, the number of the image generation units being one, the image generation unit writing the first target image fragment data into the corresponding frame buffer block; Or (b) The number of the image generating units is multiple, the image generating units are in one-to-one correspondence with the frame buffer blocks, and each image generating unit generates the corresponding first target image fragment data.

Description

Display driving chip, testing device and equipment Technical Field The embodiment of the disclosure relates to the technical field of display, in particular to a display driving chip, a testing device and equipment. Background With the development of display technology, the desire for display devices is increasing. In order to realize the display of an image, it is necessary to write an image of a current Frame into a Frame Buffer, and a Micro-Led display screen (Micro Led display device) reads the image buffered in the Frame Buffer to perform scanning. In order to test the Micro-Led full screen, image test data is required to be written into a frame buffer memory storage unit area, so that the area of the frame buffer memory storage unit area is required to be enlarged, the size of the Micro-Led display driving chip is increased, and the Micro-Led display screen has extremely strict requirements on the size of the Micro-Led display driving chip, so that the design difficulty of the Micro-Led display driving chip is increased. Disclosure of Invention Embodiments described herein provide a display driving chip, a testing device, and an apparatus, which reduce the size of the display driving chip of a micro LED display device by implementing a test of the micro LED display device without increasing the area of a frame buffer memory unit by dynamically multiplexing the frame buffer memory unit. In a first aspect, an embodiment of the present application provides a display driving chip, where the display driving chip is applied to testing a micro LED display device, and the display driving chip includes an image generating unit, a frame buffer storage unit, and a controller; The frame buffer storage unit is used for buffering first target image data, wherein the data volume of the first target image data is smaller than or equal to the image data volume corresponding to a first resolution, and the image resolution of a middle display image of the first resolution micro LED display device; The image generation unit is used for generating the first target image data, storing the generated first target image data into the frame buffer storage unit, wherein one part of the image data of the first target image data is stored in a dynamic buffer area of the frame buffer storage unit, and the other part of the image data of the first target image data is stored in a non-dynamic buffer area of the frame buffer storage unit; And Generating second target image data, and after the image data stored in the dynamic cache area part in the first target image data is sent to the micro LED display device, storing the second target image data in the dynamic cache area in the frame cache storage unit; The controller is used for sending the first target image data in the frame buffer storage unit to the micro LED display device, then sending the second target image data in the dynamic buffer area to the micro LED display device, and presenting a third target image on the micro LED display device based on the first target image data and the second target image data, wherein the resolution of the third target image is a second resolution, and the second resolution corresponds to the full-screen image resolution of the micro LED display device. According to the application, the step-by-step storage is carried out on the test image, when the image storage data is stored in the test process, the part of the test image data (namely the first target image data) is firstly stored in the frame buffer storage unit, the dynamic storage area is arranged in the frame buffer storage unit, after the data stored in the dynamic storage area in the first target image data is sent to the micro LED display device, the other part of the test image data (namely the second target image data) is stored in the frame buffer storage unit, compared with the image data quantity corresponding to the full-screen image resolution stored in the frame buffer storage unit in the test process in the prior art, the image data quantity corresponding to the image resolution of the medium-display image of the micro LED display device can be stored by utilizing the frame buffer storage unit, so that the test on the micro LED display device is realized on the premise that the area of the frame buffer storage unit is not increased, the design capacity of the frame buffer storage unit is reduced, and the size of the display driving chip of the micro LED display device is reduced. One possibility is that the second resolution is greater than the first resolution. In one possible way, the first target image data and the second target image data are divided based on bit planes to generate a plurality of image bit plane data, wherein each image bit plane data comprises corresponding bit plane data in the first target image data and the second target image data; And the controller is used for reading each image bit plane data so as to enable the micro LED display device to displ