JPS63132219A - Active matrix color panel - Google Patents

Abstract

PURPOSE:To obtain a panel which has superior color balance and excellent contrast by specifying the color array of picture elements, and coupling a line through which a select signal is supplied with elements to picture elements of the same color and varying the peak voltage of the select signal at every color. CONSTITUTION:When the color arrays of picture elements are as shown in a figure, picture elements of the same color connect with each other in one of a longitudinal, a lateral, and a slanting direction, so an image is seen very naturally. Further, picture elements 21-24 of the same color (Red) are connected by one line and picture elements 26-29 of another color (Green) are also connected by one line 210. Therefore, the peak voltage of a composite waveform can be made different at every color, so the signal is adjusted to its best voltage to obtain excellent black. Consequently, the contrast of the panel can be improved and the panel of good quality is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a color arrangement of pixels of a liquid crystal color panel and an applied signal waveform.

[Conventional technology]

The color arrangement of pixels of a conventional liquid crystal multicolor panel formed with two-terminal elements is as shown in FIG. 4, and the applied signals are as shown in FIG.

[1 point while the invention is trying to solve the problem] However, with the above-mentioned technology, it is not possible to change the peak voltage of the 1 selection signal for each color, so it is not possible to change the color balance of the screen or obtain good contrast. Ta. FIG. 6 is a diagram explaining this point in detail, where the horizontal axis represents the peak voltage of one composite signal.

The vertical axis shows transmittance. Because of the light wavelength dependence of the retardation of liquid crystal, the loci 61, 62, 63 of the contrast curve differ for each color, especially when the peak voltage 64t- corresponding to the intermediate tone is applied.

The intensity of light differs for each color, and in this case, the entire panel becomes reddish, and the voltage 65.66.67 at which the penetration becomes the smallest differs for each color, so t RtG*Bt
If the voltage level of the signal applied to each pixel is the same, sufficient contrast cannot be obtained.The present invention is intended to solve this problem, and its purpose is to achieve excellent color balance. The aim is to provide a panel with good contrast.

[Means for solving problems]

The active matrix color panel of the present invention is characterized in that (j) it is a liquid crystal multicolor panel in which two-terminal elements are formed on one substrate, and the color arrangement of pixels is as shown in FIG.

(is') A method of connecting the two-terminal elements of the panel and an applied signal are as follows.

(1) A line for supplying a selection signal to the element is formed on one of the upper and lower substrates on which an element is formed, and the line is connected to elements of pixels of the same color.

(2) The peak voltage of the selection signal is different for each color.

[Effect]

According to the above configuration of the present invention, as shown in FIG. 2, the pixel elements 4 to 24 of the same color (Red) are connected in one 2-in-2 configuration. In addition, ~4 pixel elements of another color (Green) are also connected by -ri lines 210.

Therefore, the peak voltage of the composite waveform for each color (35 to 35 in Figure 3)
37) can be changed. 111 shown in t46 diagram
When the peak voltage of the IK composite waveform is set to 65, Red becomes the darkest, and when the peak voltage is set to t-66, Area becomes the darkest. When the peak voltage f is set to 67, Blue becomes the darkest, so by adjusting the respective optimum voltages, a good black can be produced. Therefore, the contrast of the panel could be improved, resulting in a panel of very high quality.

[Implementation row]

FIG. 1 is a plan view showing the color arrangement of each pixel according to the present invention. With this arrangement, the same colors are not lined up vertically, horizontally, or diagonally, so the 1m image looks very natural. FIG. 3 is a graph of signals applied to the panel of the present invention.

Since the voltage is set and output for each color, the selection signal is 3 for each color.
2 (Red) 33 (Grins), 34
(Blue) has a different peak voltage. FIG. 7 is a circuit diagram showing one implementation in which the peak voltage is actually changed for each color. Diodes 71, 72, 73, 74 generate voltages corresponding to the peaks of each color, and the voltages are applied to analog switches 75, 76, T7. By sampling at 78, 79, and 710 and supplying the potential to the driver driver C711, selection signals 32, 33, and 34 having different peak voltages for each color can be obtained.

〔Effect of the invention〕

As described above, according to the present invention, by changing the color arrangement of each pixel, the method of connecting elements within each pixel, and the applied signals from those of conventional ones, a panel with a natural screen and good contrast and color balance can be created. This has the effect of

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the color arrangement of each pixel according to the present invention. FIG. 2 is a plan view showing a method of connecting two-terminal elements of each pixel according to the present invention. FIG. 3 is a graph showing signals applied to a panel of the present invention. FIG. 4 is a plan view showing the color arrangement of pixels of a conventional liquid crystal multicolor panel formed with two-terminal elements. FIG. 5 is a graph showing a conventional applied waveform. FIG. 6 is an explanatory diagram showing the relationship between voltage and transmittance for each color. FIG. 7 is a circuit diagram showing one implementation in which the peak voltage is changed for each color. 51...Data signal of conventional waveform 52轡e11 Selection signal of conventional waveform 53...Composition signal of conventional waveform 712-"・Input signal, input power supply 7"3-"al"1" J,, □ヱj ″5
1 Figure 20 Figure 4

Claims (2)

[Claims] (1) An active matrix color panel in which a two-terminal element is formed on one substrate, and the pixel color arrangement is such that horizontally adjacent pixels are shifted by 1.5 pixels in the vertical direction. (2) Claim 1, characterized in that the method of connecting the two-terminal elements of the panel and the applied signals are as follows.
Active matrix color panel as described in section. [1] A line for supplying a selection signal to the element is formed on one of the upper and lower substrates on which an element is formed, and the line is connected to elements of pixels of the same color. [2] The peak voltage of the selection signal is changed for each color.