Unlock instant, AI-driven research and patent intelligence for your innovation.

Backlight unit, liquid crystal display device and backlight light-dark interconversion regulating method of liquid crystal display device

A technology of a liquid crystal display device and a backlight unit, which is applied to static indicators, instruments, etc., can solve problems such as affecting the display effect and reducing product quality, and achieve the effect of good display effect and smooth screen switching.

Active Publication Date: 2018-03-09
TRULY SEMICON
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dot-matrix backlight unit currently used generally controls each light-emitting area through the backlight drive unit, and each area is controlled separately, so that although the requirements for local light control can be achieved, when switching screens, if adjacent areas Perform obvious light-to-dark conversion, that is, the original highlighted area turns into dark, and the adjacent originally dark area becomes highlighted. Since the adjacent areas are individually controlled, there is no transition buffer area. When switching It will affect the display screen of the display module due to obvious backlight changes, thereby affecting the display effect and reducing product quality

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Backlight unit, liquid crystal display device and backlight light-dark interconversion regulating method of liquid crystal display device
  • Backlight unit, liquid crystal display device and backlight light-dark interconversion regulating method of liquid crystal display device
  • Backlight unit, liquid crystal display device and backlight light-dark interconversion regulating method of liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, the present invention provides a backlight unit 1, which is used to realize the requirement for local light control of the backlight unit 1, while maintaining a smooth transition when the backlight switches from bright to dark. The backlight unit 1 includes a light emitting assembly 11 and a plurality of backlight driving units 12 for controlling the brightness and darkness of the light emitting assembly, specifically, as figure 2 As shown, the light emitting assembly 11 includes a substrate 111 and an array of LEDs 112 electrically connected to the substrate 111 . After the array LED112 is set, the light-emitting assembly 11 can be divided into multiple control areas, and each area can contain a plurality of LED112. Preferably, the number of LED112 in each area is equal; in this way, the light-emitting assembly 11 can be adjusted according to the display requirements. The brightness or switch of the backlight can realize the requirement of ...

Embodiment 2

[0031] Such as Figure 5 As shown, the present invention also provides a liquid crystal display device, which includes the backlight unit 1 described in the first embodiment. Further, it also includes a display module 3 and a main control module 2, the main control module 2 is electrically connected with the display module 3 and the backlight unit 1, and the main control module 2 is used to The display image information of 3 generates a brightness control signal and transmits it to the backlight unit 1 . Specifically, the display module 3 includes a display panel 31 and a display control module 32 , the display control module 32 is used to control the display image of the display unit and generate a display image information display signal to transmit to the main control module 2 .

[0032] Specifically, the main control module 2 can calculate the grayscale value of the displayed image according to the displayed image information transmitted by the display control module 32, ...

Embodiment 3

[0034] Such as Figure 6 As shown, the present invention also provides a backlight adjustment method for a liquid crystal display device, which is applied to the liquid crystal display device provided in Embodiment 2. The backlight adjustment method includes the following steps:

[0035] Step 1: The display control module 32 controls the display image of the display panel 31, and generates display image information and transmits it to the main control module 2;

[0036] Step 2: The main control module 2 generates a brightness control signal according to the display image information, wherein the brightness control signal includes a darkening signal and a brightening signal; the main control module 2 generates the darkening signal and the switching signal. The bright signal is sent to the backlight unit 1; specifically, the main control module 2 calculates the grayscale value of the displayed image according to the displayed image information transmitted by the display control ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a backlight unit, a liquid crystal display device and a backlight light-dark interconversion regulating method of the liquid crystal display device. The backlight unit comprisesa lighting assembly and a plurality of backlight driving units, wherein the backlight driving units are used for controlling the light-dark conditions of the lighting assembly; the lighting assemblycomprises a substrate and an LED array which is electrically connected to the substrate; the lighting assembly is divided into a plurality of control areas, and each control area, the one-Nth regionsof the control areas which are linearly adjacent to the control area, the one-N<2>th regions of the control areas which are adjacent to the control area in a dotted mode are electrically connected tothe same backlight driving unit, and the value range of N from 2 to 4. When backlight light-dark interconversion is achieved by means of the backlight unit, the liquid crystal display device and the backlight regulating method, a light-dark interconversion transition area can exist, and accordingly, a better display effect can be achieved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight unit, a liquid crystal display device and a method for adjusting the brightness and darkness of the backlight. Background technique [0002] Liquid crystal display devices are widely used in various occasions due to their thinness, low energy consumption, and no radiation. The display module in the liquid crystal display module is a passive display device, so a backlight unit is required to provide light refracted by the display module. Come out to display the screen. Now with the further increase of the application field of liquid crystal display, in order to further improve the display effect of the display, the demand for local light control is put forward for the backlight of the product, that is, the light-emitting component composed of array LEDs electrically connected to the substrate is used to replace the backlight. In this way, the light-emitting component...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G09G3/34
Inventor 周福新戴佳民
Owner TRULY SEMICON