Backlight local control display device and terminal device

Abstract

The invention provides a display device. The display device is characterized in that the display device comprises a backlight unit which comprises a light guide plate, and is used for providing a backlight for the display device, a transmittance and reflectance controllable film which comprises a number of array units, and is used for carrying out regional control on the backlight, an optical modulation layer which has a number of pixel units, and is used for modulating a light from the transmittance and reflectance controllable film, and a control unit which is connected with a number of array units of the transmittance and reflectance controllable film, and is used for controlling the array units of the transmittance and reflectance controllable film to switch between different states according to a display content. The transmittance and reflectance controllable film is located between the backlight unit and the optical modulation layer. Through the configuration, the display device provided by the invention can dynamically control the backlight to realize backlight regional control, which enhances the dynamic contrast, reduces power consumption and improves the image quality.

Description

technical field [0001] The present invention relates to a display device and terminal equipment for controlling backlight, and more particularly, to a display device and terminal equipment for partially controlling backlight. Background technique [0002] In traditional display devices, due to the use of uniform backlight, no matter what screen is displayed, the backlight is always bright, such as figure 1 shown, for figure 1 In the display of the image in the traditional display technology, the backlights of the dark area 101 and the bright area 102 are all on, so there is the following problem: for the dark area 101, we do not need or only need a small amount of backlight, and In fact, the intensity of the backlight is the same as that of the white area 102, which will result in waste of backlight and light leakage in the dark area. It not only wastes power consumption but also reduces the picture quality; for the bright area, we want it to be brighter, so as to improve ...

AI Technical Summary

Problems solved by technology

[0002] In traditional display devices, due to the use of uniform backlight, no matter what screen is displayed, the backlight is always bright, such as figure 1 shown, for figure 1 In the display of the image in the traditional display technology, the backlights of the dark area 101 and the bright area 102 are all on, so there is the following problem: for the dark area 101, we do not need or only need a small amount of backlight, and In fact, its backlight intensity is the same as that of the white area 102, which will lead to waste of backlight and light leakage in dark areas

However, this solution can only control the light intensity in a strip or a large area, and cannot control the light intensity in a smaller range

For example, if figure 1 The backlights of the dark area 101 and the bright area 102 are provided by the same light guide strip, but the above-mentioned problems of wasting power consumption and reducing picture quality still cannot be solved.

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