CN1499473A - Liquid crystal display possessing configuration of circuit for driving data wire - Google Patents

Abstract

Faceplate of LCD possesses multiple pixels. Each pixel possesses three points for displaying red, green and blue. Each data wire in multiple data wires is connected to one point. Driving circuit of data wire is configured with multiple video signal wires, which are crossed with data wires. Selective connection between multiple video signal wires and data wire transfers video signal through corresponding data wire to pixel point in sequence. In adjacent two pixels, two points displaying same color are connected to two data wires, which are connected to same video signal wire.

Description

LCD with data line drive circuit configuration

(1) technical field

The relevant a kind of LCD of the present invention, the data line driver circuit configuration of especially relevant a kind of LCD.

(2) background technology

Along with electronic installation develops toward miniaturization, the application of LCD is also day by day popularized.The consumer is when using LCD, and can wish has good visual effect.The panel defect of LCD can cause relatively poor visual effect, and this is the required shortcoming of being avoided when making LCD.

Fig. 1 is the known circuit arrangement of LCD.There are many data line (data line) D (K) and many sweep trace (scan line) S (K) to intersect on the panel 20.Panel comprises a plurality of pixels (pixel), and each pixel is usually by three points, as red point (red dot), green point (green dot) and Bluepoint (blue dot), form.Data line D (K) and sweep trace S (K) link with each point respectively, with the signal that provides panel to show.Sweep trace S (K) is by scan line drive circuit (scan line driving circuit) 30 controls, and data line D (K) is then by data line drive circuit (data line driving circuit) 20 controls.

Fig. 2 is in the prior art, the synoptic diagram of data line drive circuit configuration.Data line drive circuit comprises that shift register (shift register) 102 and a plurality of switch 104 are delivered to the sequential (timing) of data line with control data.Video signal cable L1～L6 optionally is connected with data line D1～D12, to transmit vision signal V1～V6.Panel has a plurality of pixels, shown in P1, P2, P3 and P4.Each pixel can be made up of red point, green point and Bluepoint, is made up of red some R1, green some G1 and Bluepoint B1 as pixel P1.Every bit is connected with a data line in regular turn.By shift register 102 and switch 104 controls, in regular turn vision signal V1～V6 is passed to corresponding point via data line D1～D12, and produce required picture.

Among Fig. 2 the arrangement mode of data line D1～D12 and video signal cable L1～L6 be with 6 data lines be one group and video signal cable in regular turn L1～L6 link in regular turn and circulate.After data line D6 and video signal cable L6 binding, data line D7 and video signal cable L1 link.Therefore the received vision signal of pixel P2 is to be transmitted by the last item video signal cable V6, and and the received vision signal of pixel P2 adjacent pixels P3, transmitted by article one video signal cable V1.The video signal cable of different bars has different capacitances and resistance value, and especially article one video signal cable V1 and the last item video signal cable V6 difference are bigger.When the vision signal of adjacent pixels is by having the very big different video signal wire of capacitance and resistance value difference when being transmitted, two shown colors of pixel can be variant, causes having on the panel fine rule to exist.When especially having more video signal cables on big panel, the color distortion between neighbor can be more obvious.

For solving this problem, the someone proposes the data line circuit configuration as Fig. 3.With 12 data lines is one group, and at first data line D1～D6 and video signal cable L1～L6 link in regular turn, and then data line D7～D12 and video signal cable L6～L1 link in regular turn.Like this, the vision signal of adjacent pixels P2 and P3 all is to be transmitted by video signal cable V4～V6, reducing the color distortion of pixel P2 and P3, thereby avoids the generation in boundary line.

But pixel is three points by different colours, forms as red point, green point and Bluepoint.As shown in Figure 3, the vision signal of the red some R3 of the red some R2 of pixel P2 and pixel P3 is transmitted by video signal cable V4 and V6 respectively.Video signal cable V4 has different capacitances and resistance value with V6.Therefore the color distortion of red some R2 and R3 still exists, green some G2, G3 and Bluepoint B2, B3 also with.Still can there be a boundary line between neighbor P2 and P3.

(3) summary of the invention

The purpose of this invention is to provide a kind of LCD,, thereby avoid on panel, forming an obvious boundary line with the color distortion of reduction neighbor with data line drive circuit configuration.

LCD with data line drive circuit configuration of the present invention, LCD comprises a panel with MxN pixel; Each pixel has P point, as showing red, green and 3 blue points respectively; The information-driven circuit arrangement has PxN bar data line, and each data line connects a point; One switch control of video signal transmission is arranged on each bar data line; One shift register is for gauge tap; Many video signal cable intersects with data line; Many video signal cables and data line selectivity link in regular turn vision signal is passed to a little via corresponding data line; In two adjacent pixels, show that two points of same color are to be connected in two data lines, and two data lines are to be connected in same video signal cable.

(4) description of drawings

Fig. 1 is known LCD circuit configuration.

Fig. 2 is the synoptic diagram of data line drive circuit configuration in the prior art.

Fig. 3 is the synoptic diagram of another kind of data line drive circuit configuration in the prior art.

Fig. 4 is the synoptic diagram of the data line drive circuit configuration of a preferred embodiment of the present invention.

(5) embodiment

The invention provides the configuration of the data line drive circuit of LCD,, avoid on panel, forming an obvious boundary line to reduce the color distortion of neighbor.

Fig. 4 is the synoptic diagram of data line drive circuit configuration in one embodiment of the invention.Data line drive circuit 40 comprises that shift register 402 and a plurality of switch 404 are delivered to the sequential of data line with control data.General panel has MxN pixel, and each pixel is made up of several points.Usually pixel is made up of 3 points, as red point, green point and Bluepoint.Every bit is connected with a data line, so each panel has 3xN bar data line.Be example with 4 pixels among Fig. 4, therefore have 12 data line D1～D12.Data drive circuit 40 has 6 video signal cable L1～L6, to transmit vision signal V1～V6.

With reference to figure 4, vision signal V1～V6 transmits via video signal cable L1～L6.Video signal cable L1～L6 optionally is connected with data line D1～D12 to transmit vision signal to corresponding point, and connected mode is described below.At first, video signal cable L1～L6 links with data line D1～D6 in regular turn.Then video signal cable V4～V6 links with data line D7～D9 in regular turn, and video signal cable V1～V3 links with data line D10～D12 in regular turn.Among adjacent two pixel P2 and the P3, the vision signal of red some R2 and R3 is all transmitted by video signal cable V4, and the vision signal of green some G2 and G3 is all transmitted by video signal cable V5, and the vision signal of Bluepoint B2 and B3 is all transmitted by video signal cable V6.Like this, the vision signal of the point among adjacent pixels P2 and the P3 is by identical video signal cable transmission.Therefore do not have excessive color distortion between two adjacent pixels.

The connected mode of data line of the present invention and video signal cable is not limited to mode as described in Figure 4.When A bar video signal cable was arranged in the data line drive circuit, the preceding A bar of data line was to be connected with A bar video signal cable in regular turn.If 1 pixel comprises 3 points, common A-2, the point that A-1 and A bar data line are connected is formed 1 pixel.And the point that A+1, A+2 and A+3 bar data line are connected is formed 1 adjacent pixels in addition.In these two adjacent pixels, the point that A-2 is connected with A+1 bar data line is for showing with of the same colour, and the point that A-1 is connected with A+2 bar data line is for showing with of the same colour, and the point that A is connected with A+3 bar data line is for showing with of the same colour.The vision signal that shows the data line that whole-colored point is connected is provided by same video signal cable, all be connected A-2 bar video signal cable as A-2 with A+1 bar data line, A-1 all is connected A-1 bar video signal cable with A+2 bar data line, and A all is connected A bar video signal cable with A+3 bar data line.If A=6, then the drive circuitry arrangement of data line as shown in Figure 4.

The detailed description of above preferred embodiment is in order to more clearly to describe feature of the present invention and spirit, but not in order to limit the scope of the invention.Scope of the present invention should limit according to following appended claim, and comprises the layout that intrinsic equivalence changes and has equivalence.

Claims (5)

1. one kind has the LCD that data line drive circuit disposes, and this LCD comprises a panel with MxN pixel, and this each pixel has P point, and this every bit shows a color, it is characterized in that, this LCD comprises:

PxN bar data line, each this data line connects this point; And

A bar video signal cable, intersect with this PxN bar data line, wherein this A bar video signal cable and this PxN bar data line selectivity link to transmit a plurality of vision signals, and this A bar video signal cable should a plurality of vision signals pass to this point via corresponding this data line in regular turn;

Wherein, this PxN bar data number line is a unit with the A bar, be connected with this A bar video signal cable in regular turn, when in adjacent two these pixels, pixel has this point and the one other pixel that link with this A signal line and has this point that links with this A+1 signal line, and two these points that show same color in these two adjacent pixels are to be connected in two data lines and this two data lines are to be connected in same video signal cable.

2. LCD as claimed in claim 1 is characterized in that, this each pixel is made up of a red point, a green point and a Bluepoint, and this some ordering that forms this pixel is to form along this video signal cable direction with red, green and blue order.

3. LCD as claimed in claim 1 is characterized in that, each this data line further comprises a switch, is passed to this point to control this vision signal.

4. LCD as claimed in claim 3 is characterized in that, the data line drive circuit configuration further comprises a shift register to control this switch.

5. one kind has the LCD that data line drive circuit disposes, this LCD comprises a panel with MxN pixel, and this each pixel has three points, and these three points show redness, green and blue respectively, it is characterized in that this LCD comprises:

3xN bar data line, each this data line connects this point;

3xN switch, each this switch are this data lines of control, are passed to this point to control this vision signal;

One shift register is for this 3xN of control switch; And

A bar video signal cable, intersect with this 3xN bar data line, wherein this A bar video signal cable and this 3xN bar data line selectivity link to transmit a plurality of vision signals, and this A bar video signal cable should a plurality of vision signals pass to this point via corresponding this data line in regular turn;

Wherein, this PxN bar data number line is a unit with the A bar, be connected with this A bar video signal cable in regular turn, when in adjacent two these pixels, pixel has this point and the one other pixel that link with this A signal line and has this point that links with this A+1 signal line, and two these points that show same color in these two adjacent pixels are to be connected in two data lines and this two data lines are to be connected in same video signal cable.

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