TWI421602B - Active device array substrate, liquid crystal display panel and electronic apparatus - Google Patents

Description

Active device array substrate, liquid crystal display panel and electronic device

The present invention relates to an active device array substrate and a liquid crystal display panel, and more particularly to an active device array substrate and a liquid crystal display panel capable of reducing a disconnection rate.

FIG. 1 is a schematic diagram of a conventional active device array substrate. Referring to FIG. 1 , the active device array substrate 100 includes a plurality of pixel units 110 and a plurality of scanning lines G1 , G2 , G3 G Gn and a plurality of data lines D1 , D2 , D3 D Dn . The pixel unit 110 is composed of an active element TFT and a pixel electrode PE. It should be noted that the first pixel unit 112 and the second pixel unit column 114 on both sides of the single data line D1 share the data line D1 to transmit the driving signal.

The arrow A in FIG. 1 is the charging path of the active device array substrate 100, at the intersection of any single data line D1~Dn (such as D1) and the scanning lines G1~Gn (such as G1, G2) (area B) There are two active element TFTs located on the charging path A. The above design can halve the data line, which is called the half of the data line and the design of the Half Data Double Gate (HDDG).

However, in the above-described active device array substrate 100, between the adjacent two data lines D1 and D2, there is a dummy line DL which does not function. Therefore, such a line design cannot effectively utilize the line space. In addition, when the shared data line D1 is disconnected, the pixel units 110 on both sides of the data line D1 will not operate normally.

In view of the above, the present invention provides an active device array substrate, which can reduce the disconnection rate of the pixel structure and effectively utilize the line space.

The present invention provides a liquid crystal display panel having the above-described active device array substrate and capable of displaying images of good quality.

Based on the above, the present invention provides an active device array substrate comprising: a plurality of pixel units and a plurality of scan lines and a plurality of data lines. Each pixel unit has an active element, and the plurality of pixel units are arranged in at least one set of a first pixel unit column and a second pixel unit column which are adjacent to each other and are vertically disposed. The scan line and the data line are electrically connected to the active component of the corresponding pixel unit, wherein the data line of the active component of the pixel unit connected to the first pixel unit column and the pixel unit connected to the second pixel unit column The data line of the active component is to form a closed loop. In particular, in the first pixel unit column, the active elements of the pixel unit are connected to the scan lines of the odd positions, and in the second pixel unit column, the active elements of the pixel units are connected to the scan lines of the even positions; In the first pixel unit column, the active elements of the pixel unit are connected to the scan lines of the even position, and in the second pixel unit column, the active elements of the pixel units are connected to the scan lines of the odd positions.

In an embodiment of the invention, the pixel unit of the first pixel unit column and the pixel unit of the second pixel unit column are sequentially and alternately driven through the scan line and the data line; or, via the scan line and the data The lines sequentially drive the pixel units of the second pixel unit column and the pixel units of the first pixel unit column.

In an embodiment of the invention, the first pixel unit column and the second pixel unit column adjacent to each other are a group of array units, which are sequentially arranged in the lateral direction of the active device array substrate.

The present invention also provides a liquid crystal display panel comprising: the active device array substrate, the opposite substrate, and the liquid crystal layer. The opposite substrate is opposite to the active device array substrate. The liquid crystal layer is disposed between the active device array substrate and the opposite substrate.

In an embodiment of the invention, the opposite substrate is a color filter substrate.

The invention further provides an electronic device comprising: the above liquid crystal display panel and an input unit. The input unit is coupled to the liquid crystal display panel for inputting signals Number to the LCD panel to provide images.

The above described features and advantages of the present invention will be more apparent from the following description.

2 is a schematic diagram of an active device array substrate in accordance with a preferred embodiment of the present invention. The active device array substrate 200 includes a plurality of pixel units 210 and a plurality of scanning lines G1, G2, G3 to Gn and a plurality of data lines D1, D2, D3 to Dn. Each of the pixel units 210 has an active element TFT, and the plurality of pixel units 210 are arranged in at least one set of a first pixel unit column 212 and a second pixel unit column 214 which are adjacent to each other and disposed longitudinally. The scan lines G1, G2, G3 G Gn and the data lines D1, D2, D3 D Dn are electrically connected to the active elements of the corresponding pixel unit 210 (for example, a thin film transistor TFT), wherein the first pixel unit column 212 is connected. The data line D1 of the active device TFT of the pixel unit 210 and the data line D1 of the active device TFT connecting the pixel unit 210 of the second pixel unit column 214 form a closed loop. In particular, in the first pixel unit column 212, the active element TFT of the pixel unit 210 is connected to the scan lines G1, G3, G5, G _{2n+1 of the} odd-numbered positions (n=0, 1, 2, 3... In the second pixel unit column 214, the active element TFT of the pixel unit 210 is connected to the scanning lines G2, G4, G6, G _2n (n = 1, 2, 3, ...) of the even position.

Referring to FIG. 2, the first pixel unit column 212 and the second pixel unit column 214 adjacent to each other are a group of arrangement units, which are sequentially arranged in the lateral direction of the active device array substrate 200. More specifically, the first pixel unit column 212 and the second pixel unit column 214 adjacent to each other are regarded as one unit, and are sequentially arranged on the active device array substrate 200. The first group of first pixel units 212 and second pixel units 214 transmit signals by connecting data lines D1 that are connected to each other to form a closed loop, the nth group of first pixel units 212 and the second pixel unit Column 214 transmits signals through data lines Dn that are connected to each other to form a closed loop, and so on.

Referring to FIG. 2, the color of the pixel unit 210 of the first pixel unit column 212 transmitting the signal via the data line D1 is red, and the color of the pixel unit 210 of the second pixel unit column 214 is green; The color of the pixel unit 210 of the first pixel unit column 212 of the D2 transmission signal is blue, the color of the pixel unit 210 of the second pixel unit column 214 is red; and the first picture of the signal is transmitted via the data line D3. The color of the pixel unit 210 of the prime unit column 212 is green, and the color of the pixel unit 210 of the second pixel unit column 214 is blue. Of course, the color arrangement of the pixel unit 210 is not limited to the above examples, and those skilled in the art can adopt a suitable color setting manner according to design requirements.

In addition, the active device TFT may be a three-terminal element (having a gate, a source, and a drain) such as a thin film transistor. In addition, each pixel unit 210 may further have a pixel electrode PE electrically connected to the corresponding scan lines G1, G2, G3~Gn and the data lines D1, D2, D3 via the active device TFT. ~Dn.

In particular, as shown in FIG. 2, the pixel unit 210 of the first pixel unit column 212 and the second layer are sequentially alternately driven via the scanning lines G1, G2, G3 to Gn and the data lines D1, D2, D3 to Dn. The pixel unit 210 of the pixel unit column 214. In more detail, the order of driving is: the uppermost pixel unit 210 of the first pixel unit column 212, the uppermost pixel unit 210 of the second pixel unit column 214, and the first pixel unit column 212. The second pixel unit 210, the second pixel unit 210 of the second pixel unit column 214, and so on.

FIG. 3 is a timing diagram of driving waveforms of an active device array substrate according to a preferred embodiment of the present invention. Referring to FIG. 2 and FIG. 3 simultaneously, the first pixel unit column 212 and the second pixel unit column 214 that transmit signals via the data line D1 are taken as an example. Bright. The scanning lines G1 and G2 are turned on at the frame in which the square wave driving signal is applied, so that a positive voltage can be injected into the pixel unit 210 connected to the scanning lines G1 and G2; and the scanning lines G3 and G4 are not applied. Since the frame timing of the wave drive signal is turned on, a positive voltage is not injected into the pixel unit 210 connected to the scanning lines G3 and G4. By analogy, it can be seen that the pixel unit 210 of the active device array substrate 200 shown in FIG. 2 performs column inversion to display an image. The active device array substrate 200 described above can employ well-known driving waveform timings without changing the driving waveform timing. Of course, the above-mentioned driving waveform timing diagram is only an example, and those skilled in the art can adopt a driving signal having a suitable waveform, amplitude, and the like according to design requirements.

As described above, since the data lines D1, D2, D3 to Dn of the active device array substrate 200 are connected to each other and the position of the active device TFT is designed, the line space can be effectively utilized and the disconnection rate can be reduced. The above-described active device array substrate 200 has many advantages and will be further described below.

4 is a schematic view of the active device array substrate of FIG. 2 when a disconnection occurs. Referring to FIG. 4, taking the third group of first pixel unit 212 and the second pixel unit column 214 as an example, the first pixel unit column 212 and the second pixel unit column 214 are connected to each other through the head and tail. A closed loop formed by two data lines D3, D3 transmits a drive signal. Therefore, when a data line D3 is disconnected (as in the area D), the drive signal can still be transmitted through the signal transmission path I formed by the data line D3 having the broken line and the other data line D3. In this way, the first pixel unit 212 and the plurality of pixel units 210 in the second pixel unit column 214 can still obtain the correct data voltage.

FIG. 5 is a schematic diagram of a signal transmission path of the active device array substrate of FIG. 2. FIG. Referring to FIG. 5, the driving signals from the data lines D1 and D1 can be transmitted to and scanned via the signal transmission paths I1 and I2 (the two paths I1 and I2 can be moved). The active element TFT of the pixel unit 210 connected to the line G5. That is to say, the impedance of the overall signal transmission paths I1, I2 becomes small, and the attenuation phenomenon of the drive signal can be reduced.

In addition, comparing the conventional FIG. 1 with FIG. 2 of the present invention, as shown in the conventional FIG. 1, on any single data line D1~Dn (such as D1) and the scanning lines G1~Gn (such as G1, G2). The intersection (at area B) has two active elements TFTs on the charging path A; however, as shown in Figure 2 of the present invention, on any single data line D1~Dn (such as D1) and scan lines At the intersection of G1~Gn (such as G1) (at the area C), only one active device TFT is located on the charging path A. When there are more active device TFTs at the intersection of the data lines D1 to Dn and the scanning lines G1 to Gn, a larger parasitic capacitance will be caused. It can be seen that the active device array substrate 200 of the present invention has a small parasitic capacitance and can improve the display effect of the pixel unit 210.

FIG. 6 is a schematic diagram of another active device array substrate according to a preferred embodiment of the present invention. Referring to FIG. 6, the active device array substrate 202 is similar to the active device array substrate 200 shown in FIG. 2, and the same components are denoted by the same reference numerals. The difference between the two is that in the first pixel unit column 212, the active element TFT of the pixel unit 210 is connected to the scan lines G2, G4, G6, G _{2n of the} even position (n=1, 2, 3.. In the second pixel unit column 214, the active element TFT of the pixel unit 210 is connected to the scan lines G1, G3, G5, G _{2n+1 of the} odd position (n = 0, 1, 2, 3: . . . That is, the placement positions of the active device TFTs as shown in FIGS. 2 and 6 are different from each other. Similarly, the active device array substrate 202 has the same advantages as the active device array substrate 200. In particular, as shown in FIG. 6, the pixel unit 210 of the second pixel unit column 214 is sequentially and alternately driven via the scanning lines G1, G2, G3 to Gn and the data lines D1, D2, D3 to Dn, and the first The pixel unit 210 of the pixel unit column 212. In more detail, the order of driving is: the uppermost pixel unit 210 of the second pixel unit column 214, the uppermost pixel unit 210 of the first pixel unit column 212, and the second pixel unit column 214. The second pixel unit 210, the second pixel unit 210.... of the first pixel unit column 212, and so on.

FIG. 7 is a schematic diagram of a liquid crystal display panel according to a preferred embodiment of the present invention. The liquid crystal display panel 300 includes an active device array substrate 310, a counter substrate 320, and a liquid crystal layer 330. The counter substrate 320 is opposed to the active device array substrate 310. The liquid crystal layer 330 is disposed between the active device array substrate 310 and the opposite substrate 320. In an embodiment, the opposite substrate 320 may be a color filter substrate; or, when the color filter layer (not shown) is disposed on the active device array substrate 310, the opposite substrate 320 may be a transparent glass substrate.

It should be noted that the active device array substrate 310 may employ the active device array substrates 200, 202 described above. In this way, good display quality can be provided.

FIG. 8 is a schematic diagram of an electronic device according to a preferred embodiment of the present invention. Referring to FIG. 8 , the electronic device 400 includes a liquid crystal display panel 410 and an input unit 420 . The input unit 420 is coupled to the liquid crystal display panel 410 for inputting signals to the liquid crystal display panel 410 to provide images. The liquid crystal display panel 410 can employ the liquid crystal display panel 300 shown in FIG. 7 described above.

In addition, the electronic device 400 may be a mobile phone, a digital camera, a digital photo frame, a personal data assistant, a notebook computer, a desktop computer, a television, a display, or a portable DVD player, which is not limited herein.

In summary, the active device array substrate, the liquid crystal display panel, and the electronic device of the present invention have at least the following advantages: Based on the above, the present invention adopts a new data line connection method and an arrangement of active components, and also connects the front and rear points of two adjacent data lines to form a closed Loop. In addition, scan lines are also used to control the time at which the drive signal is read. In this way, not only can the pixel electrode get the correct voltage, but also the function of halving the number of data lines. In particular, by connecting the front and rear points of two adjacent data lines, the line space can be effectively utilized, and the line break rate in the pixel structure can be reduced, the impedance of the signal transmission path can be reduced, and the general driving waveform can still be directly used. Timing.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100, 200, 202, 310‧‧‧ active component array substrate

110, 210‧‧‧ pixel units

112, 212‧‧‧ first pixel unit column

114, 214‧‧‧ second pixel unit column

300, 410‧‧‧ LCD panel

320‧‧‧ opposite substrate

330‧‧‧Liquid layer

400‧‧‧Electronic devices

420‧‧‧ input unit

A‧‧‧Charging path

B, C, D‧‧‧ areas

D1~Dn‧‧‧ data line

DL‧‧‧Virtual Line

G1~Gn‧‧‧ scan line

I, I1, I2‧‧‧ signal transmission path

PE‧‧‧ pixel electrode

TFT‧‧‧ active components

FIG. 1 is a schematic diagram of a conventional active device array substrate.

2 is a schematic diagram of an active device array substrate in accordance with a preferred embodiment of the present invention.

FIG. 3 is a timing diagram of driving waveforms of an active device array substrate according to a preferred embodiment of the present invention.

4 is a schematic view of the active device array substrate of FIG. 2 when a disconnection occurs.

FIG. 5 is a schematic diagram of a signal transmission path of the active device array substrate of FIG. 2. FIG.

FIG. 6 is a schematic diagram of another active device array substrate according to a preferred embodiment of the present invention.

FIG. 7 is a schematic diagram of a liquid crystal display panel according to a preferred embodiment of the present invention.

FIG. 8 is a schematic diagram of an electronic device according to a preferred embodiment of the present invention.

200‧‧‧Active component array substrate

210‧‧‧ pixel unit

212‧‧‧ first pixel unit column

214‧‧‧Second pixel unit column

TFT‧‧‧ active components

PE‧‧‧ pixel electrode

A‧‧‧Charging path

C‧‧‧ area

D1~Dn‧‧‧ data line

G1~Gn‧‧‧ scan line

Claims (12)

An active device array substrate comprises: a plurality of pixel units, each pixel unit having an active element, the pixel units being arranged in at least one set of a first pixel unit column and a longitudinally adjacent one another a second pixel unit column; and a plurality of scan lines and a plurality of data lines electrically connected to the corresponding active elements of the pixel units; wherein the pixels connected to the first pixel unit column The data lines of the active elements of the unit and the data lines of the active elements of the pixel units connected to the second pixel unit column form a closed loop, and in the first pixel unit column The active elements of the pixel units are connected to the scan lines at odd positions, and in the second pixel unit column, the active elements of the pixel units are connected to the scan lines at even positions Driving the pixel elements of the first pixel unit column and the pixel units of the second pixel unit column in a staggered manner through the scan lines and the data lines; or at the first The pixels in the pixel unit column The active elements of the element are connected to the scan lines in an even position, and in the second pixel unit column, the active elements of the pixel units are connected to the scan lines at odd positions, via the scans The line and the data lines sequentially drive the pixel units of the second pixel unit column and the pixel units of the first pixel unit column. The active device array substrate according to claim 1, wherein the first pixel unit column and the second pixel unit column adjacent to each other are a group of arrangement units, sequentially in the active device array. The substrates are arranged in the lateral direction. The active device array substrate according to claim 1, wherein the active device is a thin film transistor. The active device array substrate according to claim 1, wherein each pixel unit further comprises: a pixel electrode electrically connected to the corresponding scan line and the data line via the active element. The active device array substrate according to claim 1, wherein the color of the pixel units of the first pixel unit column is red, and the color of the pixel units of the second pixel unit column It is green. The active device array substrate according to claim 1, wherein the color of the pixel units of the first pixel unit column is blue, and the pixel units of the second pixel unit column The color is red. The active device array substrate according to claim 1, wherein the color of the pixel units of the first pixel unit column is green, and the color of the pixel units of the second pixel unit column It is blue. A liquid crystal display panel comprising: an active device array substrate, wherein the active device array substrate is an active device array substrate according to any one of claims 1-7; a pair of substrates, opposite The active device array substrate; and a liquid crystal layer disposed between the active device array substrate and the opposite substrate. The liquid crystal display panel of claim 8, wherein the opposite substrate is a color filter substrate. An electronic device comprising: a liquid crystal display panel comprising: an active device array substrate, wherein the active device array substrate is an active device array substrate according to any one of claims 1 to 7; a counter substrate, opposite to the active device array substrate; and a liquid crystal layer disposed on the active device array substrate and the opposite substrate And an input unit coupled to the liquid crystal display panel for inputting signals to the liquid crystal display panel to provide an image. The electronic device of claim 10, wherein the opposite substrate is a color filter substrate. The electronic device of claim 10, wherein the electronic device is a mobile phone, a digital camera, a digital photo frame, a personal data assistant, a notebook computer, a desktop computer, a television, a display, or a portable DVD. player.