ELECTRONIC DEVICE AND DISPLAY SCREEN ADJUSTMENT METHOD

• US 20190130871A1
• Filed: 06/11/2018
• Published: 05/02/2019
• Est. Priority Date: 10/31/2017
• Status: Active Grant

• Current Assignee: Chiun Mai Communication Systems, Inc. (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Chiun Mai Communication Systems, Inc. (Hon Hai Precision Industry Co., Ltd.)
• Inventors: HSU, CHEN-SHENG
• Granted Patent: US 10,643,552 B2
• Time in Patent Office: Days
• CPC Class Codes: G09G 2320/0233 Improving the luminance or brightness uniformity across the screen
• CPC Class Codes: G09G 2320/0285 using tables for spatial correction of display data
• CPC Class Codes: G09G 2330/10 Dealing with defective pixels
• CPC Class Codes: G09G 2360/147 the originated light output being determined for each pixel
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 3/342 using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
• CPC Class Codes: G09G 3/3607 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127
• CPC Class Codes: G09G 5/10 Intensity circuits

Abstract

A display screen adjustment method, applied in a display screen includes a display module. The display screen adjustment method includes steps of: displaying a preset picture in a display area of the display module; dividing the display area into a plurality of subareas; detecting whether a brightness of the display area is uniform; determining which subareas have higher brightness than the other subareas; and decreasing light transmittances of pixels in the subareas having higher brightness to offset additional brightness of the pixels that is caused by light leaking of the pixels. An electronic device is also provided.

Claims

1. An electronic device, comprising:

a display screen, comprising a backlight source, a light guide plate and a display module, the backlight source being set at one side of the display module, the light guide plate guiding light emitted from the backlight source to light the display module, and the display module comprising multiple pixels; and

a drive module, configured for controlling a light transmittance of each of the pixels, and controlling the display module to display a preset picture;

when the pixels comprises at least one light-leaking pixel, the drive module is configured for decreasing the light transmittance of the at least one light-leaking pixel to offset additional brightness of the at least one light-leaking pixel that is caused by light leaking of the at least one light-leaking pixel.

2. The electronic device of claim 1, wherein the drive module is configured for obtaining the light transmittance of each pixel according to color information of the same pixel.

3. The electronic device of claim 2, wherein the drive module converts the color information of each pixel to the light transmittance of the same pixel according to a preset mapping relationship between the color information of the pixels and the light transmittances of the pixels.

4. A display screen adjustment method, applied in a display screen comprising a display module, the adjustment method comprising:

displaying a preset picture in a display area of the display module;

dividing the display area into a plurality of subareas;

detecting whether a brightness of the display area is uniform;

determining which subareas have higher brightness than the other subareas; and

decreasing light transmittances of pixels in the subareas having higher brightness to offset additional brightness of the pixels that is caused by light leaking of the pixels.

5. The adjustment method of claim 4, wherein the display area is an entire display area of the display module.

6. The adjustment method of claim 4, wherein the display area is an edge area of the display screen positioned opposite to a backlight source of the display module.

7. The adjustment method of claim 4, wherein the display area is an edge area of the display module, and the edge area is positioned in a direction which is non-parallel with and non-perpendicular to a light transmission direction of a light guide plate of the display module.

8. The adjustment method of claim 4, wherein a distance between the display area and a backlight source of the display module is less than a preset value.

9. The adjustment method of claim 4, wherein the step of determining which subareas have higher brightness than the other subareas comprising:

detecting and comparing the brightness of each subarea, and selecting the subareas having higher brightness.