Grating driving circuit, liquid crystal grating and optical terminal
A grating driving and circuit technology, applied in the field of liquid crystal gratings, optical terminals, and grating driving circuits, can solve the problems of the limitation of the twist degree of liquid crystal molecules, affecting the light transmittance of liquid crystal gratings, and the high cost of grating driving chips, and achieves the reduction of circuit costs. Effect
Inactive Publication Date: 2021-05-21
SHANGHAI OUFEI INTELLIGNET VEHICLE INTERNET TECH CO LTD
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The existing grating drive circuit realizes the light transmission control of the grating by cooperating with a dedicated grating drive chip, but the price of the grating drive chip is relatively high, and the cut-off range of the output voltage of the grating drive chip is limited by the input voltage, making the grating drive chip The output voltage cannot be continuously adjusted, resulting in the limitation of the twisting degree of the liquid crystal molecules in the liquid crystal panel, which in turn affects the light transmittance of the liquid crystal grating
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0017] The circuit structure and working process of the grating driving circuit in the liquid crystal grating in the optical terminal are described in detail below with reference to the accompanying drawings. The optical terminal is used to perform light processing, and can be an image processing display terminal, an optical modulator, an optical switch, etc.
[0018] see figure 1 , which is a schematic structural diagram of a liquid crystal panel in an embodiment ...
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
Login to View More Abstract
The invention discloses a grating driving circuit. The grating driving circuit comprises a voltage regulation unit and a voltage inversion unit, wherein the voltage regulation unit is used for outputting an adjustable grating control signal to the voltage inversion unit. The voltage inversion unit is used for receiving the grating control signal, and a power supply unit in the voltage inversion unit performs filtering processing on the grating control signal to serve as a driving signal; and after a pulse unit in the voltage inversion unit performs pulse processing on the grating control signal, a second integrated circuit in the voltage inversion unit performs inversion processing to obtain and output a first grating driving signal and a second grating driving signal with opposite voltages, wherein the driving signal is used for driving the second integrated circuit to execute inversion processing, and the first grating driving signal and the second grating driving signal are matched to control the light transmission of the liquid crystal grating. The invention further discloses a liquid crystal grating comprising the grating driving circuit. The invention further discloses an optical terminal comprising the liquid crystal grating.
Description
technical field [0001] The present application relates to the field of grating driving, in particular to a grating driving circuit, a liquid crystal grating and an optical terminal. Background technique [0002] The liquid crystal grating includes a liquid crystal panel and a grating driving circuit. The liquid crystal panel includes a first substrate, a second substrate and a liquid crystal layer located between the two substrates. The grating driving circuit is to control the twisting of the liquid crystal molecules in the liquid crystal layer to different degrees by applying corresponding signals on the first substrate and the second substrate, thereby changing the light transmittance of the liquid crystal grating. [0003] The existing grating drive circuit realizes the light transmission control of the grating by cooperating with a dedicated grating drive chip, but the price of the grating drive chip is relatively high, and the cut-off range of the output voltage of th...
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
Login to View More IPC IPC(8): G02F1/133
CPCG02F1/13306
Inventor 何松林
Owner SHANGHAI OUFEI INTELLIGNET VEHICLE INTERNET TECH CO LTD