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308results about How to "Solve the problem of light leakage" patented technology

Self-adapting dynamic backlight control system and method based on image content

The invention discloses a self-adapting dynamic backlight control system and method based on image content. According to image content, a plurality of backlight regions are control independently, therefore the effects are achieved that power consumption is lowered and frame contrast is raised. A video stream is divided into two paths: one path is used for calculating backlight brightness, and the other path carries out liquid crystal compensation. In the backlight brightness calculation path, a histogram statistic module carries out statistics of image brightness, weighted average of the maximum value and the average value of the corresponding regions is carried out and backlight brightness information of the current region is obtained. Through a set threshold determination condition, the brightness is adjusted, final brightness information is obtained, adjustment by an output control module is carried out, and output through a serial data flow is carried out. In addition, because an image content distortion phenomenon can happen after backlight modulation, compensation of the original video signal is carried out according to the obtained backlight brightness information in the liquid crystal compensation path, and screening display as a final video signal is carried out.
Owner:XI AN JIAOTONG UNIV

Color film substrate and production method, display panel and display device of color film substrate

The invention discloses a color film substrate and a production method, a display panel and a display device of the color film substrate used for solving the problems that a curve-flat conversion display panel leaks light or the transmittance is descended. The color film substrate comprises a substrate base plate, a black matrix and a color film layer including color sub pixels in matrix arrangement; the color film substrate also comprises a plurality of electrophoresis units and a flat layer; each electrophoresis unit comprises a first control electrode, a second control electrode, opaque charged particles, a transparent electrophoretic liquid medium and a transparent retaining wall; the transparent retaining wall is used for limiting the opaque charged particles and the transparent electrophoretic liquid medium in a first preset area; the area comprises the first control electrode and the second control electrode; the first control electrode and the second control electrode are respectively used for receiving different voltage signals to form a voltage difference, so that the opaque charged particles move towards the direction of the first control electrode or the second control electrode in a gathering way, and the width of a shading area between two adjacent color sub pixels is changed; the flat layer covers the whole substrate base plate and is used for sealing the electrophoresis units.
Owner:BOE TECH GRP CO LTD +1

Backlight module

The invention provides a backlight module. The backlight module comprises a back plate, a reflecting sheet arranged in the back plate, a light guide plate arranged on the reflecting sheet, an optical membrane assembly arranged on the light guide plate, a backlight source arranged in the back plate and facing the light guide plate, a frame arranged on the back plate, and an elastic retaining wall arranged above the light incident end of the backlight source and the light guide plate and fixed on the frame in a plugging, attaching or clamping manner, wherein the elastic retaining wall includes a bottom surface and a side surface vertical to the bottom surface; and the bottom surface and the side surface keep close contact with the upper surface of the light guide plate and the backlight source. The elastic retaining wall made of white rubber and having elasticity is fixed on the frame in the plugging, attaching or clamping manner and keeps close contact with the light guide plate and the upper surface of an LED (light emitting diode) lamp, so that the elastic retaining wall can reflect light back to the light guide plate to well prevent the light from being emitted from a gap on the light incident side, thereby solving the problem of incident-side light leakage of the backlight module and improving the light efficiency of the backlight module.
Owner:TCL CHINA STAR OPTOELECTRONICS TECH CO LTD

Liquid crystal display panel and display device

The embodiment of the invention provides a liquid crystal display panel and a display device and relates to the technical field of the liquid crystal display. The light leakage problem caused by inferior alignment of a colored film substrate and an array substrate is solved. The liquid crystal display panel comprises the colored film substrate and the array substrate, wherein the array substrate comprises a first transparent substrate, a data line and a grid line; the colored film substrate comprises a second transparent substrate, colored resin, a first black matrix parallel to the data line, a second black matrix parallel to the grid line, and a common electrode covering the colored resin, the first black matrix and the second black matrix; the first black matrix comprises a bottom plane and a raised structure on the bottom plane; side walls of the raised structure in first positions are inclined walls; the inclined walls are inclined to a central vertical plane of the first black matrix along the data line direction from the first positions; and the first positions are intersected positions between the bottom plane and two side walls of the raised structure closest to a boundary position of the first black matrix and the colored resin. The liquid crystal display panel provided by the embodiment of the invention is used for increasing the display quality.
Owner:BOE TECH GRP CO LTD +1

Frameless liquid crystal display module and implementation process thereof

The invention discloses a frameless liquid crystal display module and an implementation process thereof. The frameless liquid crystal display module comprises a frameless cover plate, a silk-screen ink area, an edge cambered surface area, a transparent window area, optical cement, an upper polarizer, a lower polarizer, ultra-narrow-frame liquid crystal display glass, a backlight module, a flexible circuit board, a drive IC, black shading tape, an upper brightness enhancement film, a lower brightness enhancement film, a diffuser, a light guide plate, a rubber frame and lower iron frame, a reflector plate, an LED lamp bar group, an ultra-narrow-frame liquid crystal display glass component and adhesive. The frameless liquid crystal display module has the advantages that the semi-finished product of the frameless liquid crystal display module is formed by the frameless cover plate matched with the ultra-narrow-frame liquid crystal display glass, the frameless cover plate is thick and has a cambered surface at the edge, the cambered surface can reflect light, the semi-finished product is assembled with the frameless backlight module, then further adhering is performed by spraying the adhesive, and a frameless display effect is achieved by the light reflection of the edge of the frameless cover plate.
Owner:安徽帝晶光电科技有限公司

Touch screen and touch display electronic device

The invention discloses a touch screen and a touch display electronic device. The touch screen comprises a substrate, an auxiliary electrode layer, a common electrode layer and a routing layer, wherein the auxiliary electrode layer, the common electrode layer and the routing layer are arranged on the same side of the substrate, and the common electrode layer and the routing layer are oppositely arranged in the direction perpendicular to the substrate. The common electrode layer comprises a plurality of common electrode blocks which are the same. Each common electrode block comprises a center electrode and a sawtooth electrode electrically connected with the center electrode. The opposite sawtooth electrodes of every two adjacent common electrodes are nested. The routing layer comprises a plurality of first wires electrically and correspondingly connected with the common electrode blocks in a one-to-one mode. The auxiliary electrode layer comprises a plurality of auxiliary electrode blocks. The sawtooth electrodes adjacent to the edge of the substrate and the auxiliary electrode blocks are nested. When the common electrode blocks input common voltage signals for image display control, the auxiliary electrode blocks input common voltage signals. The touch screen improves the touch detection precision, and prevents the problems of visibility of edge images and light leakage of pixel electrodes near to the edge of the substrate.
Owner:SHANGHAI TIANMA MICRO ELECTRONICS CO LTD +1
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