JP2006259135A - Display apparatus and color filter substrate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display apparatus capable of displaying color display of high luminance and high quality and a color filter substrate used for the display apparatus. <P>SOLUTION: The display apparatus of the invention has a plurality of pixels arranged in matrix having a plurality of rows and a plurality of columns. Each of the plurality of pixels 1 has a first color picture element for displaying a first color, a second color picture element for displaying a second color, a third color picture element for displaying a third color and two fourth color picture elements for displaying a fourth color. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a display device, and more particularly to a display device that performs color display. The present invention also relates to a color filter substrate used in such a display device.

  At present, liquid crystal display devices capable of color display (color liquid crystal display devices) are widely used. In color liquid crystal display devices, color filters are provided corresponding to picture elements (dots), and typically colors corresponding to the three primary colors of red (R), green (G), and blue (B) light. Filters are arranged in a predetermined pattern corresponding to the picture elements. Three picture elements (dots) of R, G, and B constitute one pixel (pixel), and each pixel can perform color display.

  In recent years, methods for improving the display brightness of a color liquid crystal display device have been proposed. For example, in Patent Document 1, as shown in FIG. 11, in addition to three picture elements 1R, 1G, and 1B of R, G, and B, a picture element 1W corresponding to white (W) is provided, and these four pictures are provided. There is disclosed a liquid crystal display device 500 in which one pixel 1 is composed of elements.

  Also, Patent Document 2 discloses a liquid crystal display device 600 in which one pixel 1 is constituted by four picture elements including a W picture element 1W, as shown in FIG. In the liquid crystal display device 600, four picture elements 1R, 1G, 1B, and 1W are arranged in a square shape.

Since the W picture element has higher light utilization efficiency than other picture elements, one pixel is composed of four picture elements including the W picture element as disclosed in Patent Documents 1 and 2. Then, the display brightness is improved.
JP 11-295717 A Japanese Patent Laid-Open No. 2-118521

  However, as disclosed in Patent Documents 1 and 2, when one pixel is composed of four picture elements, the luminance is improved, but the display quality is deteriorated as described in detail below.

  As a technique for suppressing the occurrence of display flicker called flicker, as shown in FIG. 13, dot inversion driving is known in which the polarity of an applied voltage is inverted for each picture element. However, when this dot inversion drive is performed in the liquid crystal display device 500 disclosed in Patent Document 1, as shown in FIG. 14, the polarities of the voltages applied to the pixels of the same color are all the same in each row. . For this reason, when monochrome display is performed, all the lines have the same polarity, the load on the signal wiring is increased, and display unevenness due to crosstalk occurs. Note that FIG. 14 shows signal wirings 513 electrically connected to switching elements (for example, TFTs) of each picture element, and the polarity of the display signal voltage supplied from each signal wiring 513 is an odd-numbered picture. Element and even-numbered picture elements are indicated by “+” and “−”, respectively.

  Also in the liquid crystal display device 600 disclosed in Patent Document 2, if inversion driving as shown in FIG. 15 (inverted polarity every two rows in the column direction) is performed, the pixels of the same color in each row are displayed. The polarities of the applied voltages are all the same, and display unevenness due to crosstalk is also generated.

  In the case of the U-shaped arrangement as disclosed in Patent Document 2, the polarity is inverted every two columns from the source driver that supplies the display signal voltage to the signal wiring 613 as shown in FIG. If the display signal voltage is supplied to each line, the voltage applied to the pixels of the same color can be reversed in each row, but source drivers capable of such output are not commercially available and must be specially ordered. Increase manufacturing costs. In addition, since the polarity is inverted every two columns, a voltage having the same polarity is supplied to two adjacent signal wirings 613. Therefore, the influence of the parasitic capacitance is not offset between the adjacent signal wirings 613, and display unevenness occurs.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a display device capable of high-luminance and high-quality color display and a color filter substrate used therefor.

  The display device according to the present invention is a display device having a plurality of pixels arranged in a matrix having a plurality of rows and a plurality of columns, wherein each of the plurality of pixels displays a first color. A color picture element, a second color picture element for displaying a second color, a third color picture element for displaying a third color, and two fourth color picture elements for displaying a fourth color This achieves the above object.

  In a preferred embodiment, when viewed from the normal direction of the display surface, the areas of the first color picture element, the second color picture element, and the third color picture element are substantially equal to each other, and the area of the fourth color picture element is It is approximately half the area of each of the first color picture element, the second color picture element, and the third color picture element.

  In a preferred embodiment, the first color picture element is a red picture element that displays red, the second color picture element is a green picture element that displays green, and the third color picture element is a blue color that displays blue. It is a picture element.

  In a preferred embodiment, the fourth color picture element is a white picture element that displays white.

  In a preferred embodiment, the red picture element, the green picture element, the blue picture element, and the two white picture elements are arranged in a predetermined order along a row direction.

  In a preferred embodiment, the two white picture elements are arranged so as to sandwich at least one of the red picture element, the green picture element, and the blue picture element.

  In a preferred embodiment, the two white picture elements are arranged so as to sandwich one of the red picture element, the green picture element, and the blue picture element.

  In a preferred embodiment, the two white picture elements are arranged so as to sandwich the red picture element or the blue picture element.

  In a preferred embodiment, each of the red picture element, the green picture element, the blue picture element, and the two white picture elements includes a first electrode, a second electrode facing the first electrode, and a first electrode. A liquid crystal layer provided between the electrode and the second electrode; and a switching element electrically connected to the first electrode, the red picture element, the green picture element, the blue picture element, and the second picture element. A voltage having a polarity opposite to that applied to the liquid crystal layer of the picture element adjacent in the row direction is applied to the liquid crystal layer of each of the two white picture elements.

  In a preferred embodiment, the display device according to the present invention further includes a plurality of scanning wirings extending along the row direction and a plurality of signal wirings extending along the column direction, The signal wiring to which the switching element of one of the white picture elements is connected and the signal wiring to which the switching element of the other white picture element is connected are electrically connected outside the display area.

  A color filter substrate according to the present invention includes a plurality of pixels arranged in a matrix having a plurality of rows and a plurality of columns, and each of the plurality of pixels is used in a display device having a plurality of picture elements. A substrate having a plurality of color filters corresponding to the plurality of picture elements, wherein the plurality of color filters transmit a first color light that transmits light of a first color and a second color of light; A second color filter that transmits light, a third color filter that transmits light of the third color, and two fourth color filters that transmit light of the fourth color; This achieves the above object.

  In a preferred embodiment, the first color filter is a red color filter that transmits red light, the second color filter is a green color filter that transmits green light, and the third color color filter. The filter is a blue color filter that transmits blue light.

  In a preferred embodiment, the fourth color filter is a white color filter that transmits white.

  In a preferred embodiment, the red color filter, the green color filter, the blue color filter, and the two white color filters are arranged in a predetermined order along the row direction.

  In a preferred embodiment, widths of the red color filter, the green color filter, and the blue color filter along a row direction are substantially equal to each other, and a width of the white color filter along the row direction is equal to the red color filter. The green color filter and the blue color filter are each approximately half the width along the row direction.

  In a preferred embodiment, the two white color filters are arranged so as to sandwich at least one of the red color filter, the green color filter, and the blue color filter.

  In a preferred embodiment, the two white color filters are arranged so as to sandwich one of the red color filter, the green color filter, and the blue color filter.

  In a preferred embodiment, the two white color filters are arranged so as to sandwich the red color filter or the blue color filter.

  The display device according to the present invention includes a plurality of pixels arranged in a matrix having a plurality of rows and a plurality of columns, and each of the plurality of pixels displays a first color. In addition to the second color picture element for displaying the second color and the third color picture element for displaying the third color, there are two fourth color picture elements for displaying the fourth color. As described above, since each pixel includes four color picture elements, various effects that cannot be obtained when each pixel is composed of only three color picture elements are obtained. For example, each pixel includes white picture elements with high light utilization efficiency in addition to red, green, and blue picture elements, thereby improving display luminance. Furthermore, in the display device according to the present invention, each pixel is composed of five or odd picture elements. Therefore, it is possible to suppress the occurrence of display unevenness when the dot inversion driving is employed, and high-quality display can be performed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment.

  First, the basic configuration of the liquid crystal display device 100 according to the present embodiment will be described with reference to FIG.

  As shown in FIG. 1, the liquid crystal display device 100 includes a plurality of pixels 1 arranged in a matrix having a plurality of rows and a plurality of columns. FIG. 1 shows four pixels 1 (for two rows and two columns) among the plurality of pixels 1 included in the liquid crystal display device 100.

  Each of the plurality of pixels 1 has one red picture element 1R that displays red, one green picture element 1G that displays green, and one blue picture element 1B that displays blue, and further, a white picture that displays white It has two elements 1W. That is, each pixel 1 is composed of five picture elements including four color picture elements.

  The red picture element 1R, the green picture element 1G, the blue picture element 1B, and the two white picture elements 1W constituting each pixel 1 are arranged in a predetermined order along the row direction, and more specifically, FIG. The red picture element 1R, the green picture element 1G, the white picture element 1W, the blue picture element 1B, and the white picture element 1W are arranged in this order from the left side toward the right side. That is, the two white picture elements 1W are arranged so as to sandwich the blue picture element 1B.

  When viewed from the normal direction of the display surface, the areas of the red picture element 1R, the blue picture element 1B, and the green picture element 1G are substantially equal to each other, and the area of the white picture element 1W is the red picture element 1R, the blue picture element 1B, and the green picture element. It is approximately half of the area of each picture element 1G. However, the area ratio of each picture element is not limited to this, and can be set arbitrarily.

  In the liquid crystal display device 100, as described above, each pixel 1 includes the white picture element 1W in addition to the red picture element 1R, the green picture element 1G, and the blue picture element 1B. The white picture element 1W has less light absorption by the color filter and higher light utilization efficiency than the picture elements of other colors. Therefore, when each pixel 1 includes the white picture element 1W, the display luminance can be improved as compared with the case where each pixel is configured by only R, G, and B picture elements.

  Furthermore, in the liquid crystal display device 100 according to the present embodiment, each pixel 1 is composed of five picture elements. Therefore, when dot inversion driving is performed, as shown in FIG. 2, the polarity of the voltage applied to the same color picture element is inverted between two adjacent pixels 1 in the row direction. For example, in FIG. 2, when focusing on the upper left pixel 1 and the upper right pixel 1, the red pixel 1R of the upper left pixel 1 has a positive polarity of the applied voltage, whereas the red pixel 1R of the upper right pixel 1 Then, the polarity of the applied voltage is negative. Similarly, the polarity of the applied voltage is different between the upper left pixel 1 and the upper right pixel 1 for other color picture elements. As described above, in the liquid crystal display device 100, even if dot inversion driving is performed, the applied voltages to the same color picture elements do not all have the same polarity in each row, so that high-quality display in which the occurrence of display unevenness is suppressed is suppressed. It can be performed.

  Next, a more specific structure and a preferable configuration of the liquid crystal display device 100 will be described with reference to FIGS. 3 and 4. FIG. 3 is a cross-sectional view schematically showing the liquid crystal display device 100, and FIG. 4 is a plan view schematically showing the liquid crystal display device 100.

  As shown in FIG. 3, the liquid crystal display device 100 is provided with an active matrix substrate (hereinafter referred to as “TFT substrate”) 10 and a color filter substrate (also referred to as “counter substrate”) 20 and between them. And a liquid crystal layer 30.

  The TFT substrate 10 includes an insulating transparent substrate (for example, a glass substrate) 11, a scanning wiring 12 and a signal wiring 13 provided on the transparent substrate 11, a TFT 14 and a picture element electrode 15 provided for each picture element, have.

  The scanning wiring 12 extends along the row direction, and the signal wiring 13 extends along the column direction. The gate electrode, the source electrode, and the drain electrode of the TFT 14 are electrically connected to the scanning wiring 12, the signal wiring 13, and the pixel electrode 15, respectively.

  The color filter substrate 20 includes a transparent substrate (for example, a glass substrate) 21 having insulating properties, a color filter 22 formed on the transparent substrate 21, a black matrix 23, and a counter electrode 24.

  The color filter substrate 20 is enlarged and shown in FIG. The color filter substrate 20 is a color filter corresponding to each pixel, that is, a red color filter 22R that transmits red light, a green color filter 22G that transmits green light, a blue color filter 22B that transmits blue light, and A white color filter 22W that transmits white light is provided.

  The red color filter 22R, the green color filter 22G, the blue color filter 22B, and the white color filter 22W are arranged in a predetermined order along the row direction, and more specifically, from the left side to the right side in the drawing. The red color filter 22R, the green color filter 22G, the white color filter 22W, the blue color filter 22B, and the white color filter 22W are arranged in this order. That is, the two white color filters 22W corresponding to the two white picture elements 1W are arranged so as to sandwich the blue color filter 22B.

  The widths of the red color filter 22R, the green color filter 22G, and the blue color filter 22B along the row direction are substantially equal to each other, and the widths of the white color filter 22W along the row direction are the red color filter 22R and the green color filter 22G. And about half the width of each of the blue color filters 22B along the row direction. Between adjacent color filters, a black matrix 23 made of a light-shielding material is provided.

  As shown in FIG. 3, the TFT substrate 10 and the color filter substrate 20 are bonded to each other via a sealing material 31, and a liquid crystal material is injected and sealed in a gap between them to form a liquid crystal layer 30. ing. Alignment films 16 and 26 for defining the alignment direction of the liquid crystal molecules contained in the liquid crystal layer 30 are formed on the surface of the TFT substrate 10 and the color filter substrate 20 on the liquid crystal layer 30 side. Polarizing plates 18 and 28 are provided on the opposite side of the TFT substrate 10 and the color filter substrate 20 from the liquid crystal layer 30.

  In order to prevent the occurrence of flicker or to cancel the influence of the parasitic capacitance of the signal wiring 13 between the adjacent signal wirings 13, dot inversion driving or source line inversion driving as shown in FIG. 2 is performed. It is preferable. That is, it is preferable that a voltage having a polarity opposite to that applied to the liquid crystal layer 30 of the picture element adjacent in the row direction is applied to the liquid crystal layer 30 of each picture element.

  Further, FIG. 4 shows the signal wiring 13 to which one TFT 14 of the two white picture elements 1W included in each pixel 1 is connected and the signal wiring 13 to which the other TFT 14 is connected. It is preferable that they are electrically connected to each other outside the display area. By adopting such a configuration, the number of output of the source driver is reduced as compared with the case where the signal wiring 13 is simply connected to the source driver (the number of signal wirings 13 and the number of outputs of the source driver match) ( Specifically, it can be reduced to 4/5, and an increase in manufacturing cost due to the use of an expensive source driver with a large number of outputs can be prevented.

  An example of a specific configuration for electrically connecting the signal wirings 13 is shown in FIG. In the configuration shown in FIG. 6, the left signal wiring 13 and the right signal wiring 13 are electrically connected via a connection wiring 12 ′ formed of the same conductive film as the scanning wiring 12. ing. An interlayer insulating film 17 is formed at the intersection between the central signal wiring 13 and the connection wiring 12 ′, and insulation between the left and right signal wirings 13 and the central signal wiring 13 is maintained. . The interlayer insulating film 17 is formed of, for example, the same insulating film as the gate insulating film. When such a configuration is employed, specific signal wirings 13 can be electrically connected to each other without increasing an extra manufacturing process.

  The arrangement of the white picture elements 1W is not limited to that illustrated in FIGS. However, as shown in FIG. 4, when the configuration in which the two signal wirings 13 corresponding to the two white picture elements 1W of each pixel 1 are connected to each other, the two signal wirings 13 connected to each other are connected. The voltage of the same polarity is applied. Therefore, in order to perform inversion driving (dot inversion driving or source line inversion driving) at least along the row direction, two white picture elements 1W are not adjacent to each other, but an odd number of picture elements of other colors. For example, as shown in FIG. 4, it is preferable to arrange one picture element so as to sandwich it.

  In order to realize higher display quality, it is preferable to arrange the two white picture elements 1W so as to sandwich the red picture element 1R or the blue picture element 1B. As shown in FIG. 7A, when two white picture elements 1W are arranged so as to sandwich the green picture element 1G, the relatively bright white picture element 1W and the green picture element 1G are included in the pixel 1. As a result, the color mixing property when white is displayed is poor, and stripe-like display unevenness (vertical stripes) extending in the column direction is easily visually recognized. On the other hand, two white picture elements 1W are arranged so as to sandwich the blue picture element 1B as shown in FIG. 7B, or two white picture elements 1W are red as shown in FIG. 7C. If the pixels 1R are arranged so as to sandwich the picture element 1R, regions having relatively high luminance are dispersed in the pixel 1, so that color mixing is good and vertical stripes are not easily recognized.

  In the liquid crystal display device 100 according to this embodiment, each pixel 1 includes a white picture element 1W that displays white in addition to the red picture element 1R, the green picture element 1G, and the blue picture element 1B. Therefore, not only the input signals to the red picture element 1R, the green picture element 1G, and the blue picture element 1B (hereinafter simply referred to as “R signal”, “G signal”, and “B signal”) but also to the white picture element 1W. Input signal (hereinafter simply referred to as “W signal”).

  FIG. 8 shows an example of a specific configuration for generating the W signal. In the example illustrated in FIG. 8, the liquid crystal display device 100 supplies the display signal to the liquid crystal display panel 40, the gate driver 42 that supplies a scanning signal to the scanning wiring of the liquid crystal display panel 40, and the signal wiring of the liquid crystal display panel 40. A source driver 44, a gate driver 42 and a control circuit 46 for controlling the source driver 44 are provided, and a conversion processing circuit 48 for generating a W signal is further provided.

  The R signal, G signal, and B signal supplied from the external video signal source are converted into a signal group including the W signal by the conversion processing circuit 48 and output to the control circuit 46. The control circuit 46 controls the gate driver 42 and the source driver 44 based on the input signal group, and predetermined scanning signals and display signals are supplied from the gate driver 42 and the source driver 44 to the scanning wirings and signal wirings of the liquid crystal display panel 40. Is displayed.

  The conversion process from the R signal, the G signal, and the B signal to the signal group including the W signal is preferably performed so as not to disturb the display color balance as much as possible. For example, as shown in FIGS. 9 (a) and 9 (b), the lowest gradation (in this case, the gradation of the B signal) among the gradations of the R signal, the G signal, and the B signal before processing is represented by the W signal. If gradation is used, that is, an achromatic color component included in a signal group before processing is a W signal, the color balance can be prevented from being lost.

  FIGS. 9A and 9B show the case where the gray levels of the R signal, the G signal, and the B signal do not change before and after the processing, but FIGS. 10A and 10B. As shown in FIG. 4, the gradations of the R signal, the G signal, and the B signal are changed based on a predetermined rule before and after the processing (here, the case where the gradation of the B signal changes is illustrated). Good.

  Note that various known configurations and techniques can be used as a specific configuration for generating the W signal and a conversion processing technique. For example, the configurations and methods disclosed in JP-A-5-241551, JP-A-11-295717, and JP-A-2004-102292 can be used.

  In the present embodiment, the configuration in which two white picture elements 1W are provided in each pixel 1 is illustrated, but the same effect can be obtained by providing two picture elements of other colors. However, the configuration in which two white picture elements 1W are provided has a wider color range in which the luminance can be improved, and the luminance improvement rate can be increased.

  In the present embodiment, four colors of red, green, blue, and white are shown as colors displayed by the picture elements, but the present invention is not limited to this. A picture element that displays a color other than white may be combined with a picture element that displays red, green, and blue, or a picture element that displays three colors other than red, green, and blue on a picture element that displays white May be combined.

  According to the present invention, a display device capable of high-luminance and high-quality color display and a color filter substrate used therefor are provided. The present invention is suitably used for various display devices (for example, liquid crystal display devices) capable of color display.

It is a figure which shows typically the liquid crystal display device 100 in suitable embodiment of this invention. It is a figure which shows the polarity of the voltage applied to each picture element when the dot inversion drive is performed in the liquid crystal display device. 2 is a cross-sectional view schematically showing a liquid crystal display device 100. FIG. 1 is a plan view schematically showing a liquid crystal display device 100. FIG. 3 is a cross-sectional view schematically showing a color filter substrate 20 provided in the liquid crystal display device 100. FIG. It is a top view which shows an example of the structure for electrically connecting two signal wirings 13 mutually outside a display area. (A), (b) and (c) is a figure which shows the example of arrangement | positioning of two white picture elements 1W. It is a block diagram which shows an example of the structure for producing | generating the input signal to the white picture element 1W. (A) And (b) is a figure which shows an example of a signal conversion process, (a) shows the signal group before a conversion process, (b) shows the signal group after a conversion process. (A) And (b) is a figure which shows an example of a signal conversion process, (a) shows the signal group before a conversion process, (b) shows the signal group after a conversion process. It is a figure which shows the conventional liquid crystal display device 500 typically. It is a figure which shows the conventional liquid crystal display device 600 typically. It is a figure which shows the polarity of the voltage applied to each pixel at the time of performing dot inversion drive. It is a figure which shows the polarity of the voltage applied to each pixel when performing the dot inversion drive in the conventional liquid crystal display device 500. It is a figure which shows the polarity of the voltage applied to each pixel when predetermined inversion drive is performed in the conventional liquid crystal display device 600. It is a figure which shows the polarity of the voltage applied to each pixel when predetermined inversion drive is performed in the conventional liquid crystal display device 600.

Explanation of symbols

1 pixel
1R Red picture element 1G Green picture element 1B Blue picture element 1W White picture element 10 Active matrix substrate (TFT substrate)
DESCRIPTION OF SYMBOLS 11 Transparent substrate 12 Scanning wiring 12 'Connection wiring 13 Signal wiring 14 Thin-film transistor (TFT)
15 picture element electrode 16 alignment film 17 interlayer insulation film 18 polarizing plate 20 color filter substrate (counter substrate)
DESCRIPTION OF SYMBOLS 21 Transparent substrate 22 Color filter 22R Red color filter 22G Green color filter 22B Blue color filter 22W White color filter 23 Black matrix 24 Counter electrode 26 Orientation film 28 Polarizing plate 30 Liquid crystal layer 31 Sealing material 40 Liquid crystal display panel 42 Gate driver 44 Source driver 46 control circuit 48 conversion processing circuit 100 liquid crystal display device

Claims (18)

A display device having a plurality of pixels arranged in a matrix having a plurality of rows and a plurality of columns,
Each of the plurality of pixels has a first color picture element that displays a first color, a second color picture element that displays a second color, and a third color picture element that displays a third color. A display device having two fourth color picture elements for displaying four colors.   When viewed from the normal direction of the display surface, the areas of the first color picture element, the second color picture element, and the third color picture element are substantially equal to each other, and the area of the fourth color picture element is the first color picture element, The display device according to claim 1, wherein the display device is approximately half the area of each of the second color picture element and the third color picture element.   The first color picture element is a red picture element that displays red, the second color picture element is a green picture element that displays green, and the third color picture element is a blue picture element that displays blue. Or the display apparatus of 2.   The display device according to claim 3, wherein the fourth color picture element is a white picture element that displays white.   The display device according to claim 4, wherein the red picture element, the green picture element, the blue picture element, and the two white picture elements are arranged in a predetermined order along a row direction.   The display device according to claim 5, wherein the two white picture elements are arranged to sandwich at least one of the red picture element, the green picture element, and the blue picture element.   The display device according to claim 6, wherein the two white picture elements are arranged to sandwich one of the red picture element, the green picture element, and the blue picture element.   The display device according to claim 7, wherein the two white picture elements are arranged so as to sandwich the red picture element or the blue picture element. Each of the red picture element, the green picture element, the blue picture element, and the two white picture elements includes a first electrode, a second electrode facing the first electrode, a first electrode, and a second electrode. A liquid crystal layer provided therebetween, and a switching element electrically connected to the first electrode,
What are the voltages applied to the liquid crystal layers of the pixels adjacent to each other in the row direction in the liquid crystal layers of the red pixel, the green pixel, the blue pixel, and the two white pixels, respectively? The display device according to claim 5, wherein a voltage having an opposite polarity is applied. A plurality of scanning wirings extending along the row direction, and a plurality of signal wirings extending along the column direction;
The signal wiring to which the switching element of one of the two white picture elements is connected and the signal wiring to which the switching element of the other white picture element is connected are outside the display area. The display device according to claim 9, which is electrically connected. A color filter substrate having a plurality of pixels arranged in a matrix having a plurality of rows and a plurality of columns, each of the plurality of pixels being used in a display device having a plurality of picture elements,
A plurality of color filters corresponding to the plurality of picture elements;
The plurality of color filters include a first color filter that transmits light of a first color, a second color filter that transmits light of a second color, and a third color that transmits light of a third color. A color filter substrate having a filter and further having two fourth color filters that transmit light of a fourth color.   The first color filter is a red color filter that transmits red light, the second color filter is a green color filter that transmits green light, and the third color filter is transparent for blue light. The color filter substrate according to claim 11, wherein the color filter substrate is a blue color filter.   The color filter substrate according to claim 12, wherein the fourth color filter is a white color filter that transmits white light.   The color filter substrate according to claim 13, wherein the red color filter, the green color filter, the blue color filter, and the two white color filters are arranged in a predetermined order along a row direction.   The red color filter, the green color filter, and the blue color filter have substantially the same width in the row direction, and the white color filter has a width in the row direction that is the red color filter, the green color filter, and the The color filter substrate according to claim 14, wherein the color filter substrate is substantially half the width along the row direction of each blue color filter.   The color filter substrate according to claim 15, wherein the two white color filters are arranged so as to sandwich at least one of the red color filter, the green color filter, and the blue color filter.   The color filter substrate according to claim 16, wherein the two white color filters are arranged so as to sandwich one of the red color filter, the green color filter, and the blue color filter.   The color filter substrate according to claim 17, wherein the two white color filters are arranged so as to sandwich the red color filter or the blue color filter.

Images