CN105336301A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN105336301A CN105336301A CN201510897711.8A CN201510897711A CN105336301A CN 105336301 A CN105336301 A CN 105336301A CN 201510897711 A CN201510897711 A CN 201510897711A CN 105336301 A CN105336301 A CN 105336301A
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- signal
- liquid crystal
- voltage differential
- format signal
- low voltage
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Abstract
A liquid crystal display device comprises an image signal processing unit, a sequential control unit, a driving unit and a liquid crystal panel, wherein the image signal processing unit is used for converting a display signal into a low-voltage differential signaling, the low-voltage differential signaling comprises at least one bit used for indicating the low-voltage differential signaling to be a JEIDA format signal or a VESA format signal, the sequential control unit is used for judging whether the low-voltage differential signaling is the JEIDA format signal or the VESA format signal and converting the low-voltage differential signaling into multiple control signals or multiple data signals, and the driving unit drives the liquid crystal panel to display a frame of a corresponding display signal according to the control signal and the data signal. By means of the liquid crystal display device, the problem that in the prior art, switching of the VESA format signal and the JEIDA format signal can be dealt only through special circuit design can be solved.
Description
Technical field
The present invention relates to display device, particularly relate to a kind of liquid crystal indicator.
Background technology
Low Voltage Differential Signal (Low-VoltageDifferentialSignaling; LVDS) there is low noise, low EMI (ElectromagneticDisturbance; EMI), low-power consumption, high bit rate and connect the advantages such as simple, be therefore be transferred to from image processing system the signal that liquid crystal panel adopts in current liquid crystal indicator.
The LVDS that image processing system exports comprises two kinds of forms: NEC industry development association (JapanElectronicIndustryDevelopmentAssociation; JEIDA) form (hereinafter referred to as JEIDA form) and VESA (VideoElectronicsStandardsAssociation; VESA) form (hereinafter referred to as VESA form).By to time schedule controller (Timing-Controller; T-Con) LVDS data layout selects signal pin (SELLVDSpin) to arrange, and liquid crystal panel can be made to adapt to the form of LVDS.
When VESA format signal be input to acquiescence (default) be set to the liquid crystal panel of JEIDA format signal time, display will be there will be abnormal, so the liquid crystal panel of JEIDA format signal must pass through the switching of special circuit design treatment VESA format signal and JEIDA format signal, reach the object of normal display VESA format signal.
Therefore need to be proposed a solution by the problem of the switching of special circuit design treatment VESA format signal and JEIDA format signal in prior art.
Summary of the invention
The object of the present invention is to provide a kind of liquid crystal indicator, it can solve in prior art must by the problem of the switching of special circuit design treatment VESA format signal and JEIDA format signal.
For solving the problem, a kind of liquid crystal indicator provided by the invention comprises: an image signal processing unit, for a display is converted to a Low Voltage Differential Signal, described Low Voltage Differential Signal comprises at least one position, and to be used to indicate described Low Voltage Differential Signal be a JEIDA format signal or a VESA format signal; One timing control unit, be electrically coupled to described image signal processing unit, for judging that according to institute's rheme described Low Voltage Differential Signal is described JEIDA format signal or described VESA format signal, and described Low Voltage Differential Signal is converted to several control signals and several data-signals; One driver element, is electrically coupled to described timing control unit; And a liquid crystal panel, be electrically coupled to described driver element, described driver element drives described liquid crystal panel to show the picture of corresponding described display according to these control signals and these data-signals.
In liquid crystal indicator of the present invention, institute's rheme is set in HS signal bits in described VESA format signal or VS signal bits.
In liquid crystal indicator of the present invention, institute's rheme is set in HS signal bits in described JEIDA format signal or VS signal bits.
In liquid crystal indicator of the present invention, by the register presetting described timing control unit inside, described timing control unit judges that described Low Voltage Differential Signal is described JEIDA format signal or described VESA format signal.
In liquid crystal indicator of the present invention, described Register Set first level is described VESA format signal, and second electrical level is described JEIDA format signal.
In liquid crystal indicator of the present invention, when to detect institute's rheme be the first level to described timing control unit, judge that described Low Voltage Differential Signal is described VESA format signal.
In liquid crystal indicator of the present invention, when to detect institute's rheme be second electrical level to described timing control unit, judge that described Low Voltage Differential Signal is described JEIDA format signal.
In liquid crystal indicator of the present invention, described first level is high level or low level wherein one, and described second electrical level is high level or low level other one.
Compared to prior art, the liquid crystal indicator of the present invention is by improving the data layout of Low Voltage Differential Signal, vacant HS signal bits or VS signal bits are set position as signal format, therefore to solve in prior art and by the problem of the switching of special circuit design treatment VESA format signal and JEIDA format signal, the versatility of timing control unit low voltage differential signal receiving must be strengthened.
For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and coordinate institute's accompanying drawings, be described in detail below:
Accompanying drawing explanation
Fig. 1 is the schematic diagram of VESA format signal;
Fig. 2 is the schematic diagram of JEIDA format signal; And
Fig. 3 is the calcspar of the liquid crystal indicator according to one embodiment of the invention.
Embodiment
The explanation of following embodiment is graphic with reference to what add, can in order to the specific embodiment implemented in order to illustrate the present invention.
Please refer to Fig. 1 to Fig. 2, Fig. 1 is the schematic diagram of VESA format signal.Fig. 2 is the schematic diagram of JEIDA format signal.
VESA format signal and JEIDA format signal all comprise DE pattern (DEmode) and SYNC pattern (SYNCmode), DE pattern need connect a DE signal (dataenable, valid data gating) position, SYNC pattern then needs to connect HS signal (HSYNC is capable synchronous) position and VS signal (VSYNC field synchronization) position.
Existing liquid crystal indicator seldom uses SYNC pattern, therefore can not in transmission diagram 1 and Fig. 2 AR2 capable shown in HS signal bits and VS signal bits, more particularly, do not transmit HS signal bits and VS signal bits can vacant go out 2 (bit), the present invention utilizes these 2 as signal format setting position, it is in order to be designated as VESA format signal or JEIDA format signal, thus no matter input the signal of which kind of form, liquid crystal panel can normally show, and does not need to be realized by special circuit design.
Please refer to the calcspar that Fig. 3, Fig. 3 are the liquid crystal indicator 3 according to one embodiment of the invention.
Described liquid crystal indicator 3 comprises image signal processing unit 30, timing control unit 32, driver element 34 and a liquid crystal panel 36.
Described image signal processing unit 30 is for being converted to a Low Voltage Differential Signal by a display, and described Low Voltage Differential Signal comprises at least one position (bit), and to be used to indicate described Low Voltage Differential Signal be a JEIDA format signal or a VESA format signal.
In an embodiment, as shown in Figure 1, institute's rheme is set in HS signal bits in described VESA format signal or VS signal bits.
In another embodiment, as shown in Figure 2, institute's rheme is set in HS signal bits in described JEIDA format signal or VS signal bits.
Described timing control unit 32 is electrically coupled to described image signal processing unit 30, for judging that according to institute's rheme described Low Voltage Differential Signal is described JEIDA format signal or described VESA format signal, and be several control signals and several data-signals by described Low Voltage Differential Signal conversion (separating Code).
In an embodiment, by the register (register) 320 presetting described timing control unit 32 inside, described timing control unit 32 judges that described Low Voltage Differential Signal is described JEIDA format signal or described VESA format signal.It is described VESA format signal that described register 320 sets the first level, second electrical level is described JEIDA format signal, described timing control unit 32 detects institute's rheme when being the first level, judge that described Low Voltage Differential Signal is described VESA format signal, described timing control unit 32 detects institute's rheme when being second electrical level, judges that described Low Voltage Differential Signal is described JEIDA format signal.Described first level can be high level or low level wherein one, and described second electrical level can be high level or low level other one.
Described driver element 34 is electrically coupled to described timing control unit 32.
Described liquid crystal panel 36 is electrically coupled to described driver element 34, and described driver element 34 is for driving described liquid crystal panel 36 to show the picture of corresponding described display according to these control signals and these data-signals.
These control signals are for controlling the conducting of the gate line (not shown) of described liquid crystal panel 36 and not conducting.These data-signals are used for transferring to corresponding picture element (not shown) by the source electrode line (not shown) of described liquid crystal panel 36.
The liquid crystal indicator of the present invention is by improving the data layout of Low Voltage Differential Signal, vacant HS signal bits or VS signal bits are set position as signal format, therefore can solve in prior art must by the problem of the switching of special circuit design treatment VESA format signal and JEIDA format signal, thus avoid VESA format signal to be input to the problem showing exception when default setting is the liquid crystal panel of JEIDA format signal, strengthen the versatility of timing control unit low voltage differential signal receiving.In addition, do not need the LVDS data layout using time schedule controller to select signal pin (SELLVDSpin), the functional module that LVDS data layout selects signal can be omitted further.
In sum; although the present invention discloses as above with preferred embodiment; but above preferred embodiment is also not used to limit the present invention; those of ordinary skill in the art; without departing from the spirit and scope of the present invention; all can do various change and retouching, the scope that therefore protection scope of the present invention defines with claim is as the criterion.
Claims (8)
1. a liquid crystal indicator, is characterized in that, comprising:
One image signal processing unit, for a display is converted to a Low Voltage Differential Signal, described Low Voltage Differential Signal comprises at least one position, and to be used to indicate described Low Voltage Differential Signal be a JEIDA format signal or a VESA format signal;
One timing control unit, be electrically coupled to described image signal processing unit, for judging that according to institute's rheme described Low Voltage Differential Signal is described JEIDA format signal or described VESA format signal, and described Low Voltage Differential Signal is converted to several control signals and several data-signals;
One driver element, is electrically coupled to described timing control unit; And
One liquid crystal panel, is electrically coupled to described driver element, and described driver element drives described liquid crystal panel to show the picture of corresponding described display according to these control signals and these data-signals.
2. liquid crystal indicator according to claim 1, is characterized in that, institute's rheme is set in HS signal bits in described VESA format signal or VS signal bits.
3. liquid crystal indicator according to claim 1, is characterized in that, institute's rheme is set in HS signal bits in described JEIDA format signal or VS signal bits.
4. liquid crystal indicator according to claim 1, it is characterized in that, by the register presetting described timing control unit inside, described timing control unit judges that described Low Voltage Differential Signal is described JEIDA format signal or described VESA format signal.
5. liquid crystal indicator according to claim 4, is characterized in that, described Register Set first level is described VESA format signal, and second electrical level is described JEIDA format signal.
6. liquid crystal indicator according to claim 5, is characterized in that, when to detect institute's rheme be the first level to described timing control unit, judges that described Low Voltage Differential Signal is described VESA format signal.
7. liquid crystal indicator according to claim 6, is characterized in that, when to detect institute's rheme be second electrical level to described timing control unit, judges that described Low Voltage Differential Signal is described JEIDA format signal.
8. liquid crystal indicator according to claim 7, is characterized in that, described first level is high level or low level wherein one, and described second electrical level is high level or low level other one.
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| CN201510897711.8A CN105336301A (en) | 2015-12-08 | 2015-12-08 | Liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510897711.8A CN105336301A (en) | 2015-12-08 | 2015-12-08 | Liquid crystal display device |
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| CN105336301A true CN105336301A (en) | 2016-02-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109559670A (en) * | 2018-10-31 | 2019-04-02 | 惠科股份有限公司 | Data processing method of display panel and display device |
| WO2019120139A1 (en) * | 2017-12-18 | 2019-06-27 | 京东方科技集团股份有限公司 | Data conversion method, display method, data conversion device and display device |
| CN112133259A (en) * | 2020-10-09 | 2020-12-25 | 上海中航光电子有限公司 | Display module, matching method of display module and main control chip signal format and display device |
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Application publication date: 20160217 |