CN-121999726-A - Performance optimization method, device, equipment and medium of backlight module

CN121999726ACN 121999726 ACN121999726 ACN 121999726ACN-121999726-A

Abstract

The application discloses a performance optimization method, device, equipment and medium of a backlight module, wherein the method comprises the steps of obtaining configuration of a lens array of the backlight module, and obtaining light distribution data of a single lens in the lens array, wherein the light distribution data is acquired based on an optical sensor; and determining an optical uniformity index of the backlight module according to the optical performance data of each appointed measuring point, and adjusting the configuration of the lens array based on the optical uniformity index. The application can quantitatively evaluate the optical uniformity of the backlight module based on the light distribution data of the single lens, and can remarkably improve the efficiency of engineers in designing and optimizing backlight schemes.

Inventors

ZHANG XIAOMING
Li Yaosen
Wang Xianfan

Assignees

广州视源电子科技股份有限公司
广州视睿电子科技有限公司

Dates

Publication Date: 20260508
Application Date: 20241101

Claims (10)

1. The performance optimization method of the backlight module is characterized by comprising the following steps: Acquiring configuration of a lens array of a backlight module, and acquiring light distribution data of a single lens in the lens array, wherein the light distribution data is acquired based on an optical sensor; Determining optical performance data of each appointed measuring point in an effective display area of the backlight module according to the configuration of the lens array and the light distribution data; and determining an optical uniformity index of the backlight module according to the optical performance data of each designated measuring point, and adjusting the configuration of the lens array based on the optical uniformity index.
2. The method of claim 1, wherein the acquiring the light distribution data for the individual lenses in the lens array comprises: acquiring an original light distribution diagram of a single lens in the lens array acquired by an optical sensor; extracting a light intensity distribution curve from the center of the lens to the effective propagation range of the light based on the original light distribution diagram, wherein the light intensity distribution curve represents the light intensity change condition of outward diffusion of the light from the center of the lens; And expanding the light intensity distribution curve to form a light intensity distribution diagram based on the light intensity distribution curve to obtain the light distribution data.
3. The method of claim 1, wherein determining optical performance data for each specified measurement point in the effective display area of the backlight module based on the configuration of the lens array and the light distribution data comprises: Based on the light distribution data, constructing a functional relation between the light intensity and the space position under the action of a single lens, wherein the functional relation represents the change condition of the light intensity along with the space position; according to the configuration of the lens array and the functional relation, light intensity contribution values of the specified measuring points of each lens in the lens array in the effective display area of the backlight module are respectively determined; and superposing the light intensity contribution values of all lenses in the lens array at the appointed measuring points to obtain the optical performance data of the appointed measuring points.
4. A method according to claim 3, wherein the optical property data of the specified measurement point is expressed as: Wherein P is the optical performance data of the appointed measuring point, f (d) is the functional relation between the light intensity and the space position, d is the distance between the appointed measuring point and the center of the lens, the lens array comprises N lenses, (x n ,y n ) is the center coordinate of the nth lens in the lens array, and (x, y) is the coordinate of the appointed measuring point.
5. The method of claim 1, wherein the designated measurement points include non-reference measurement points and reference measurement points, the reference measurement points being located at a center position of an effective display area of the backlight module, the non-reference measurement points being located around the reference measurement points.
6. The method of claim 5, wherein the optical uniformity index is expressed as: Wherein I is an optical uniformity index, P m is optical performance data of an mth non-reference measurement point, P 0 is optical performance data of a reference measurement point, and the specified measurement point includes M non-reference measurement points and 1 reference measurement point.
7. The method of claim 1, wherein the adjusting the configuration of the lens array based on the optical uniformity index comprises: and if the optical uniformity index exceeds a preset threshold interval, adjusting one or more of the lens types, the lens number, the arrangement modes and the arrangement intervals of the lens array.
8. A performance optimization apparatus for a backlight module, the apparatus comprising: The acquisition module is used for acquiring the configuration of a lens array of the backlight module and acquiring light distribution data of a single lens in the lens array, wherein the light distribution data is acquired based on an optical sensor; The processing module is used for determining optical performance data of each appointed measuring point in the effective display area of the backlight module according to the configuration of the lens array and the light distribution data; and the verification module is used for determining the optical uniformity index of the backlight module according to the optical performance data of each appointed measuring point and adjusting the configuration of the lens array based on the optical uniformity index.
9. A computer storage medium storing instructions adapted to be loaded by a processor and to perform the method steps of any of claims 1-7.
10. An electronic device comprising a processor and a memory, wherein the memory stores a computer program adapted to be loaded by the processor and to perform the method steps of any of claims 1-7.

Description

Performance optimization method, device, equipment and medium of backlight module Technical Field The present application relates to the field of liquid crystal display technologies, and in particular, to a method, an apparatus, a device, and a medium for optimizing performance of a backlight module. Background With the development of liquid crystal display technology, the design of the backlight module of the commercial display device has increasingly significant influence on the display effect of the whole display device. Especially, the direct type backlight module is widely used in high-end display products due to its superior brightness uniformity and contrast performance. However, the conventional backlight module design mainly depends on experience and intuitive judgment of engineers. Engineers often need to adjust the arrangement of the light bars and the choice of lenses through multiple installation tests during the design process. The method based on experience and trial and error is time-consuming and labor-consuming, is easily affected by human factors, is low in efficiency, is difficult to predict the final display effect in the initial stage of product design, and increases the uncertainty of design. Disclosure of Invention The embodiment of the application provides a performance optimization method, device, equipment and medium of a backlight module, which can quantitatively evaluate the optical uniformity of the backlight module based on the light distribution data of a single lens and can remarkably improve the efficiency of engineers in designing and optimizing a backlight scheme. The technical scheme is as follows: in a first aspect, an embodiment of the present application provides a method for optimizing performance of a backlight module, where the method includes: Acquiring configuration of a lens array of a backlight module, and acquiring light distribution data of a single lens in the lens array, wherein the light distribution data is acquired based on an optical sensor; determining optical performance data of each appointed measuring point in the effective display area of the backlight module according to the configuration of the lens array and the light distribution data; And determining an optical uniformity index of the backlight module according to the optical performance data of each designated measuring point, and adjusting the configuration of the lens array based on the optical uniformity index. According to the technical scheme, the optical uniformity of the backlight module is quantitatively evaluated based on the light distribution data of the single lens, and whether the optical uniformity index under the current lens array configuration meets the requirement can be calculated only by actually measuring the light distribution data of the single lens, so that the lens array configuration is quickly adjusted, the whole machine assembly is not required, and the efficiency of engineers in designing and optimizing the backlight scheme can be remarkably improved. The method can accurately predict the influence of different lens configurations on the backlight uniformity of the whole machine in the initial design stage, thereby reducing the actual test times and the trial-and-error cost. The engineer can more quickly determine the optimal lens array configuration, ensure that the optical performance of the backlight module reaches the expected standard, and further improve the development efficiency and the overall quality of the product. In one possible implementation manner, the acquiring the light distribution data of the single lens in the lens array includes: acquiring an original light distribution diagram of a single lens in the lens array acquired by an optical sensor; Extracting a light intensity distribution curve from the center of the lens to the effective transmission range of the light based on the original light distribution diagram, wherein the light intensity distribution curve represents the light intensity change condition of the light outwards diffused from the center of the lens; and expanding the light intensity distribution curve to form a light intensity distribution curve based on the light intensity distribution curve to obtain the light distribution data. In the technical scheme, the optical sensor collects the original light distribution diagram with non-ideal central symmetry, and the light intensity distribution diagram is extracted and expanded to be a light intensity distribution diagram, so that errors caused by inaccurate lens positions can be eliminated, dependence on the azimuth angle of the lens is effectively reduced, and the calculation complexity is simplified. In the subsequent lens array design and optimization, the processed light distribution data can be more accurately used for simulating and evaluating the optical uniformity index of the backlight module, so that the optical performance of the product can reach the expected standar