CN202496028U

CN202496028U - Light valve driving chip and device of three-dimensional glasses

Info

Publication number: CN202496028U
Application number: CN2011205703857U
Authority: CN
Inventors: 户卫民; 林浩佳; 刘金权
Original assignee: Tianma Microelectronics Co Ltd
Current assignee: Tianma Microelectronics Co Ltd
Priority date: 2011-12-31
Filing date: 2011-12-31
Publication date: 2012-10-17
Anticipated expiration: 2021-12-31

Abstract

The utility model provides a light valve driving chip of three-dimensional glasses, which is connected to a television through the wireless signals. The light valve driving chip comprises an input module, a conversion module and an output module, wherein the input module with infrared reception of synchronized signals is connected to the television through wireless signals, the conversion module connected with the input module converts the synchronized signals into chip instructions, and the output module connected with the conversion module outputs driving waveform of a light valve to the three-dimensional glasses. The chip instructions control the driving waveform of the light valve, so that voltages of the driving waveform do not equal to zero either from a selected state to a non-selected state or from the non-selected state to the selected state. The utility model also provides a light valve driving device of the three-dimensional glasses. The light valve driving chip and the light valve driving device of the three-dimensional glasses provided in the utility model shortens response time of the light valve.

Description

The light valve chip for driving and the device of 3D glasses

Technical field

The utility model relates to the 3D glasses field, relates in particular to a kind of light valve chip for driving and device of 3D glasses.

Background technology

The display of the liquid crystal light valve formula 3D Display Technique scheme of main flow is alternately play with certain frequency and is supplied left eye picture of watching and the picture (these two kinds of pictures have fine distinction) that supplies eye viewing, display emission synchronizing signal simultaneously on the market now.After the liquid crystal light valve glasses are received this synchronizing signal, when display is play the left eye picture, make the liquid crystal light valve of right eye present black attitude (stoping light to pass through), the left eye liquid crystal light valve presents white attitude (allowing light to pass through), has only left eye to see picture like this; When display is play the right eye picture, make the liquid crystal light valve of left eye present black attitude (stoping light to pass through) accordingly, only allow right eye to see picture.What right and left eyes was seen like this is different pictures, when display is play (being higher than 60 hertz) picture with very high frequency, people's brain can with about two width of cloth pictures merge voluntarily, so we have just seen three-dimensional effect.Be illustrated in figure 1 as the light valve drive scheme waveform sketch map of common 3D glasses.When common non-OCB type liquid crystal light valve drove, conventional drive scheme was that state selection voltage (Vs) is driving VOP, and non-state selection voltage (Vns) is 0v; It is exactly the state that does not power up; Such drive waveforms, the Ton of the LCD that the opening time is utilized, that the shut-in time is utilized is the Toff of LCD.

Be illustrated in figure 2 as normal optical response valve time diagram, this common non-OCB type liquid crystal light valve drives, and opening time Ton and shut-in time Toff are long, cause the response speed of light valve lower.

The utility model content

In view of this; The technical problem that the utility model will solve is to overcome the shortcoming and defect that exists in the above-mentioned prior art; A kind of chip for driving of 3D glasses is provided; Make the drive waveforms of chip commands for controlling light valve be transformed into non-state selection and said drive waveforms all is not equal to 0 from the voltage that non-state selection is transformed into state selection, improved the response speed of light valve from state selection.

The utility model provides a kind of light valve chip for driving of 3D glasses, is connected to TV through wireless signal, and it comprises: input module, and wireless signal is connected to TV, infrared reception synchronizing signal; Modular converter is connected with said input module, changes said synchronizing signal and be the chip instruction, and the drive waveforms of said chip commands for controlling light valve is transformed into non-state selection and said drive waveforms all is not equal to 0 from the voltage that non-state selection is transformed into state selection from state selection; Output module is connected with said modular converter, and the drive waveforms of exporting said light valve is to 3D glasses.

As the further improvement of the utility model, the drive waveforms of said chip commands for controlling light valve is transformed into non-state selection and said drive waveforms all has an intermediate conversion process voltage from the voltage that non-state selection is transformed into state selection from state selection.

As the further improvement of the utility model, the turn-off time of the drive waveforms of said light valve is the fall time of LCD.

As the further improvement of the utility model, the opening time of the drive waveforms of said light valve is the rise time of LCD.

The utility model also provides a kind of light valve drive unit of 3D glasses, comprises the light valve chip for driving of above-mentioned 3D glasses, also comprises: flexible PCB and glass, said flexible PCB are connected between said light valve chip for driving and the said glass.

As the further improvement of the utility model, said flexible PCB receives the drive waveforms of said light valve, and exports said drive waveforms to said glass.

The light valve chip for driving and the device of the 3D glasses that the utility model provides; Make the drive waveforms of chip commands for controlling light valve be transformed into non-state selection and said drive waveforms all is not equal to 0 from the voltage that non-state selection is transformed into state selection, improved the response speed of light valve from state selection.

Description of drawings

Fig. 1 is the light valve drive scheme waveform sketch map of 3D glasses in the prior art.

Fig. 2 is a light valve response time sketch map in the prior art.

The light valve chip for driving sketch map of the 3D glasses that Fig. 3 provides for the utility model embodiment.

The light valve drive unit sketch map of the 3D glasses that Fig. 4 provides for the utility model embodiment.

The drive waveforms sketch map of the 3D glasses that Fig. 5 provides for the utility model embodiment.

Embodiment

Execution mode below in conjunction with accompanying drawing and the utility model is done further explain.

Be illustrated in figure 3 as the sketch map of the light valve chip for driving 20 of the 3D glasses that the utility model embodiment provides.

This light valve chip for driving 20 comprises input module 201, modular converter 203, and output module 205.Input module 201 is connected to TV 10 through wireless signal, infrared reception synchronizing signal.Modular converter 203 is connected with said input module 201, changes said synchronizing signal and be the chip instruction, and the drive waveforms of said chip commands for controlling light valve is transformed into non-state selection and said drive waveforms all is not equal to 0 from the voltage that non-state selection is transformed into state selection from state selection.Output module 205 is connected with said modular converter 203, and the drive waveforms of exporting said light valve is to 3D glasses.

Further, the drive waveforms of said chip commands for controlling light valve is transformed into non-state selection and said drive waveforms all has an intermediate conversion process voltage from the voltage that non-state selection is transformed into state selection from state selection.

In this execution mode, the drive waveforms of the chip commands for controlling light valve of modular converter 203 is transformed into non-state selection and said drive waveforms all has an intermediate conversion process voltage from the voltage that non-state selection is transformed into state selection from state selection.The turn-off time of the drive waveforms of light valve is the fall time of LCD.The opening time of the drive waveforms of light valve is the rise time of LCD.

Be illustrated in figure 4 as the light valve drive unit sketch map of the utility model 3D glasses.This light valve drive unit comprises TV 10, light valve chip for driving 10, flexible PCB 30 and glass 40.

Light valve chip for driving 20 is through the synchronizing signal of receiver module 201 infrared reception TVs 10; Calculate and the conversion synchronization signal through modular converter 203 again; Chip instruction, the waveform time difference and position solidifying in chip for driving, are exported the drive waveforms of light valves through output module 205.

Flexible PCB 30 receives the drive waveforms of light valve chip for driving 20 outputs, and this drive waveforms is transferred to glass 40.

Be illustrated in figure 5 as the utility model 3D glasses drive waveforms sketch map.3D glasses chip for driving 20 and device make the non-state selection voltage in the drive waveforms not to be 0 state into that add certain voltage, (Liquid Crystal Display is near V10 LCD) at LCD.

When light valve is transformed into non-state selection from state selection, near certain voltage (V10) is arranged still, the turn-off time is equivalent to utilize decline (Tf) time near LCD basically, rather than closes (Toff).When light valve is transformed into state selection from non-state selection, be not that the background color state from V0 begins, but near the beginning of the non-state selection voltage (Vns) the V10, the opening time be equivalent to basically to utilize LCD near rising (Tr time), rather than (Ton) time of unlatching.

The light valve chip for driving 20 of the 3D glasses that the utility model provides and device; Make the drive waveforms of chip commands for controlling light valve be transformed into non-state selection and said drive waveforms all is not equal to 0 from the voltage that non-state selection is transformed into state selection from state selection; Improve the response speed of light valve, the highlyest can improve 40%.

Above content is the further explain that combines concrete preferred implementation that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection range of the utility model.

Claims

1. the light valve chip for driving of a 3D glasses is connected to TV through wireless signal, it is characterized in that, comprising:

Input module, wireless signal is connected to TV, infrared reception synchronizing signal;

Modular converter is connected with said input module, changes said synchronizing signal and be the chip instruction, and the drive waveforms of said chip commands for controlling light valve is transformed into non-state selection and said drive waveforms all is not equal to 0 from the voltage that non-state selection is transformed into state selection from state selection;

Output module is connected with said modular converter, and the drive waveforms of exporting said light valve is to 3D glasses.

2. the light valve chip for driving of 3D glasses according to claim 1 is characterized in that: the drive waveforms of said chip commands for controlling light valve is transformed into non-state selection and said drive waveforms all has an intermediate conversion process voltage from the voltage that non-state selection is transformed into state selection from state selection.

3. the light valve chip for driving of 3D glasses according to claim 1, it is characterized in that: the turn-off time of the drive waveforms of said light valve is the fall time of LCD.

4. the light valve chip for driving of 3D glasses according to claim 1, it is characterized in that: the opening time of the drive waveforms of said light valve is the rise time of LCD.

5. the light valve drive unit of a 3D glasses; It is characterized in that; Comprise the light valve chip for driving of each described 3D glasses of claim 1-4, also comprise: flexible PCB and glass, said flexible PCB are connected between said light valve chip for driving and the said glass.

6. the light valve drive unit of 3D glasses according to claim 5, it is characterized in that: said flexible PCB receives the drive waveforms of said light valve, and exports said drive waveforms to said glass.