JP3793865B2 - Liquid crystal display - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid crystal display device.
[0002]
[Prior art]
For example, there are several types of pixel arrangements in a color liquid crystal display device, and they are properly used depending on the purpose. For example, when a moving image that is a TV / video image is displayed, since it is displayed in full color, as shown in FIG. 5 for the purpose of displaying so that the color mixture becomes natural and the contour portion and the like are not unnatural. A delta pixel array is mainly used, and when characters and figures are displayed as still images, a stripe pixel array is used as shown in FIG. 6 for the purpose of displaying the outline clearly. Is mainly used.
[0003]
By the way, in recent display units such as portable information terminals, for example, the upper side is a TV / video image display unit and the lower side is a character / graphic display unit so that both display units can display simultaneously. There is what I did.
[0004]
[Problems to be solved by the invention]
However, when a TV / video image display and a character / graphic display are performed on a liquid crystal display device having a delta pixel arrangement, there is a problem that the display outline of the characters / graphics becomes unclear and the display becomes difficult to see. On the other hand, when the television / video image display and the characters / graphics display are performed on the liquid crystal display device having the stripe pixel arrangement, there is a problem that the color mixture of the television / video image becomes worse and the television / video image becomes difficult to see. An object of the present invention is to make it possible to satisfactorily display both a television / video image and characters / graphics on a single display panel.
[0005]
[Means for Solving the Problems]
The present invention includes a display panel having a plurality of display portions having different pixel arrays.
According to the present invention, when the display section of the display panel is constituted by, for example, a display section having a delta pixel arrangement and a display section having a stripe pixel arrangement, both a television / video image and characters / graphics can be satisfactorily achieved with one display panel. Can be displayed.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a plan view of a liquid crystal display device according to an embodiment of the present invention. This liquid crystal display device includes one liquid crystal display panel 1. The liquid crystal display panel 1 has a structure in which a lower glass substrate 2 and an upper glass substrate 3 are bonded together via a sealing material (not shown) and liquid crystal (not shown) is enclosed therebetween. In this case, the upper side of the display unit of the liquid crystal display panel 1 is a television / video image display unit 4, and the lower side is a character / graphic display unit 5. Further, the right side, the upper side, and the lower side of the lower glass substrate 2 have protruding portions 2 a, 2 b, and 2 c that protrude from the upper glass substrate 3. A scanning line driver 6 (semiconductor chip such as LSI, the same applies hereinafter) 6 for the television / video image display unit 4 and the character / graphic display unit 5 is mounted on the upper surface of the projection 2a. A signal line driving driver 7 for the TV / video image display unit 4 is mounted on the upper surface, and a signal line driving driver 8 for the character / graphic display unit 5 is mounted on the upper surface of the protrusion 2c.
[0007]
Next, FIG. 2 is an equivalent circuit plan view of the liquid crystal display device. The television / video image display unit 4 has red, green, and blue pixel electrodes R, G, and B arranged in a so-called delta arrangement in which the pitch is shifted by 1.5 pixels for each row. That is, although not shown, for each pixel electrode R, G, B, R, G, B color filters are superposed at the corresponding positions. The source electrode of the thin film transistor 9 is connected to the pixel electrodes R, G, and B. The gate electrode of the thin film transistor 9 is connected to the scanning line driving driver 6 through the scanning line 10. The drain electrode of the thin film transistor 9 is connected to the signal line driver 7 through the signal line 11. In this case, pixel electrodes R, G, and B of the same color are connected to each signal line 11.
[0008]
The character / graphic display unit 5 has a so-called stripe arrangement in which pixel electrodes R, G, and B of red, green, and blue are arranged in a straight line in the row direction and the column direction. Also in this case, although not shown in the figure, for each of the pixel electrodes R, G, and B, the R, G, and B color filters are superposed at the corresponding positions. Since the pixel electrodes R, G, and B are linearly arranged in the column direction, the color filters R, G, and B can be formed in a stripe shape. For this reason, this arrangement is called a stripe arrangement. Is called. Each pixel electrode R, G, B formed on the character / graphic display unit 5 has the same width as each pixel electrode R, G, B formed on the television / video image display unit 4. However, the length is larger than the length of each pixel electrode R, G, B formed in the television / video image display unit 4. By doing in this way, each pixel electrode R, G, B formed in the character and figure display part 5 improves an aperture ratio, and is displayed more brightly. The source electrode of the thin film transistor 12 is connected to each pixel electrode pixel electrode R, G, B. The gate electrode of the thin film transistor 12 is connected to the scanning line driving driver 6 through the scanning line 13. The drain electrode of the thin film transistor 12 is connected to the signal line driver 8 via the signal line 14. Also in this case, the pixel electrodes R, G, and B of the same color are connected to each signal line 14.
[0009]
Thus, in this liquid crystal display device, the upper side of the display unit of the liquid crystal display panel 1 is a TV / video image display unit 4 having a delta pixel arrangement, and the lower side is a character / graphic display unit 5 having a stripe pixel arrangement. Therefore, both the TV / video image and the characters / graphics can be displayed well on the single liquid crystal display panel 1.
[0010]
In addition, although the said embodiment demonstrated the case where each signal line 11 and 14 of both the display parts 4 and 5 was connected to the respectively different signal line drive drivers 7 and 8, it is not limited to this. For example, as shown in FIGS. 3 and 4, the signal line 11 of the television / video image display unit 4 is connected to the signal line 14 of the character / graphic display unit 5, and both signal lines 11, 14 are connected to the lower glass substrate 2. You may make it connect to the common signal line driver 7 mounted in the upper surface of the protrusion part 2b of the upper side. In this case, the pixel electrodes R, G, B of the same color of the display units 4, 5 are connected to the signal lines 11, 14 connected to each other.
[0011]
In this case, since the pixel electrodes R, G, and B of the same color of the display units 4 and 5 are connected to the signal lines 11 and 14 connected to each other, the signal line driver 7 is installed. Can be shared. Therefore, as compared with the case shown in FIGS. 1 and 2, the signal line driving driver as a whole is halved, and the signal processing can be simplified. Further, it is not necessary to project the lower side of the lower glass substrate 2 from the upper glass substrate 3, and the liquid crystal display panel 1 can be downsized.
[0012]
【The invention's effect】
As described above, according to the present invention, a liquid crystal display device in which a single liquid crystal is sealed between a pair of substrates bonded via a sealing material, which is a display unit of a delta pixel array that displays a moving image. And a display panel having a display unit with a stripe pixel array for displaying still images, so that both a TV / video image and characters / graphics can be displayed well on a single display panel composed of a single liquid crystal. can do.
[Brief description of the drawings]
FIG. 1 is a plan view of a liquid crystal display device according to an embodiment of the present invention.
2 is an equivalent circuit plan view of the liquid crystal display device shown in FIG. 1. FIG.
FIG. 3 is a plan view of a liquid crystal display device according to another embodiment of the present invention.
4 is an equivalent circuit plan view of the liquid crystal display device shown in FIG. 3;
FIG. 5 is a diagram showing a delta pixel arrangement.
FIG. 6 is a diagram showing a stripe pixel arrangement.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Liquid crystal display panel 4 Television / video image display part 5 Character / graphic display part 6 Scan line driver 7, 8 Signal line driver 9, 12 Thin film transistor 10, 13 Scan line 11, 14 Signal line R, G, B Pixel electrode

Claims (2)

A liquid crystal display device in which a single liquid crystal is sealed between a pair of substrates bonded via a sealing material,
A liquid crystal display device comprising: a display panel having a display portion having a delta pixel arrangement for displaying a moving image and a display portion having a stripe pixel arrangement for displaying a still image . 2. The common signal line driving driver according to claim 1 , wherein the same signal line is connected to the same color pixels of the display unit of the delta pixel array and the display unit of the stripe pixel array, and is connected to the signal line. the liquid crystal display device, characterized in that There are provided on a predetermined one side of the display panel.

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