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180results about How to "Reduce display effect" patented technology

Liquid crystal display panel

The invention provides a liquid crystal display panel, comprising a first base plate, a second base plate and a frame glue situated between the first base plate and the second base plate; the liquid crystal display panel further comprises a display zone and a non-display zone; the frame glue is located at a non-display zone and arranged around the display zone; the liquid crystal display panel further comprises a first groove, a second groove, a first spacer and a second spacer; a bulge is formed between the groove wall of the first groove and the groove wall of the second groove, wherein the first groove and the second groove are arranged at one side of the first base place closing to the second base plate; the first groove and the second groove are situated between the frame glue and the display zone; the first groove is arranged between the frame glue and the second groove; the first spacer is extended into the first groove from the second base plate; the second spacer is extended from the second base plate to the bulge and contacted with the bulge. The structure forms a frame glue diffusion buffer layer closing to the frame glue side and a liquid crystal diffusion buffer zone closing to the liquid crystal side; thus the risk of penetration of the frame glue in a narrow side frame to the display zone and liquid crystal puncture is reduced.
Owner:XIAMEN TIANMA MICRO ELECTRONICS

Multipath high voltage output power supply circuit for smectic phase liquid crystal electronic label, and boost method

The invention discloses a multipath high voltage output power supply circuit for a smectic phase liquid crystal electronic label, and a boost realization method based on the circuit. The circuit comprises a primary boost circuit, a rectification circuit, N charge pump dual-voltage circuits in cascade connection, and a voltage adjusting circuit. The N charge pump dual-voltage circuits perform voltage multiplying for N times on inputted low voltages, and then the voltages are transmitted to the smectic phase liquid crystal electronic label through a selected high-voltage output end. The boost method comprises: inputting DC low voltages, and after voltage adjustment through the voltage adjusting circuit, the voltage at each high-voltage output end respectively rises slowly to a corresponding needed high voltage value and is finally continuously outputted. According to the invention, high voltage output of multipath different voltage values is provided, each high voltage output is also provided with multiple high voltage value changes, outputted DC high voltages are stable and reliable, and the circuit and the method provided by the invention are particularly suitable for satisfying the demand for a quite good display effect only when the smectic phase liquid crystal electronic label displays different gray scales and different high voltages are needed at different temperature conditions.
Owner:HALATION PHOTONICS CORP

A quality evaluation method, device and system for stereo projection equipment

The invention is suitable for the technical field of stereographic projection display, and provides a quality evaluation method, device and system of a stereographic projection device. The method comprises the following steps of: acquiring a corresponding projected image of the projection device on a projection screen via an image acquisition unit according to an evaluation item signal input by a user; and calculating a corresponding evaluated value of the evaluation item according to the acquired image, comparing the evaluated value with a pre-stored maximum deviation value, and displaying the evaluated value. With the method, the device and the system, a plurality of projected images are acquired in real time in a manner of time sharing according to different evaluation items, evaluation on relative offset or rotation of left and right light paths, evaluation on chroma luminance of the left and right light paths, evaluation on a crosstalk value of a left eye and evaluation on the crosstalk value of a right eye can be implemented, and compared with the prior art, the invention has the advantages of the evaluation range is wide, comprehensive analysis on factors influencing the quality of the stereographic projection device is facilitated, so that display quality of the stereographic projection device is improved, and uncomfortableness in viewing and influence on human eyes caused by phenomena, such as pseudo stereographic display and the like, can be reduced.
Owner:深圳展景世纪科技有限公司 +1

Light-emitting device, pixel circuit and control method thereof, and corresponding devices

The invention discloses a light-emitting device, a pixel circuit and a control method thereof, and corresponding devices. According to the light-emitting device, region division is carried out on an anode and a cathode to form two sub cathodes and two sub anodes and thus light-emitting areas of the light-emitting device are controlled and different light-emitting areas of the light-emitting deviceare driven intermittently to emit light, so that the attenuation speed of the light-emitting layer is decreased and thus the service life of the light-emitting device is prolonged. Because of reduction of the attenuation speeds of the light-emitting layers, attenuation differences of the light-emitting layers of light-emitting devices with different colors during the application process are reduced and thus problems of uneven displaying and display residual image occurrence due to inconsistent attenuation of the light-emitting materials with different colors are solved. Besides, when the light-emitting device is applied to a pixel circuit, different light-emitting areas of the light-emitting device are driven by driving currents, thereby realizing displaying of different light-emitting brightness with high, middle, and low levels; and the differences of driving currents corresponding to the different light-emitting brightness are small, so that problems of uneven and blurred displaying under the low-grayscale displaying are solved.
Owner:BOE TECH GRP CO LTD +1

Liquid crystal display device with switchable viewing angle, and viewing angle switching method

ActiveCN107820581ANot easily polarizedSwitch freely and easilyStatic indicating devicesNon-linear opticsPeriodic alternatingLiquid-crystal display
A liquid crystal display device with a switchable viewing angle, and a viewing angle switching method. The liquid crystal display device comprises a display panel (20), wherein the display panel (20)comprises a first substrate (21), a second substrate (22) arranged opposite the first substrate (21), and a liquid crystal layer (23) located between the first substrate (21) and the second substrate(22); a viewing angle control electrode (215) is arranged on the first substrate (21), and a common electrode (225) and a pixel electrode (227) are arranged on the second substrate (22); the display panel (20) may be switched between a wide viewing angle mode and a narrow viewing angle mode. The liquid crystal display device also comprises a display control module (33) and a voltage output module(34), wherein in the wide viewing angle mode, the screen refresh frequency of the display panel (20) is the same as a data input frequency at which screen data is input to the display control module (33), and the voltage output module (34) outputs a direct-current voltage to the viewing angle control electrode (215); and in the narrow viewing angle mode, the screen refresh frequency of the displaypanel (20) is twice or quadruple the data input frequency at which the screen data is input to the display control module (33), and the voltage output module (34) outputs a periodic alternating-current voltage to the viewing angle control electrode (215).
Owner:KUSN INFOVISION OPTOELECTRONICS
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