JP4496852B2 - Color image display device and electronic apparatus - Google Patents

Description

  The present invention relates to a color image display device and an electronic apparatus.

As a color image display device that expresses a color image, there is an apparatus that generates various colors by synthesizing three primary colors of red (R: Red), green (G: Green), and blue (B: Blue). Conventionally, there is an apparatus that displays a color image with four colors obtained by adding an achromatic color (white) to RGB (see, for example, Patent Document 1). Conventionally, there is a color liquid crystal display device in which the planar shape of a dot that is a constituent element of a pixel (unit pixel) is a shape obtained by cutting out two corners on one diagonal line in a rectangular shape ( For example, see Patent Document 2).
Japanese Patent Laid-Open No. 2002-6303 Japanese Patent Laid-Open No. 10-78590

  However, in the display device described in Patent Document 1, the unit pixel is configured by four dots each having a different display color. However, the arrangement of the dots of each color is made between unit pixels adjacent in the vertical direction of the screen. The screen is switched horizontally. Therefore, when the display device described in Patent Document 1 tries to display a straight line in the vertical direction of the screen with one of the three primary colors of RGB, for example, the contour becomes uneven. Therefore, the display device described in Patent Document 1 has a problem that there is a factor that hinders the appearance of the display image.

  In the display device described in Patent Document 2, dots (pixels) of the same color are arranged on a diagonal line from the upper right to the lower left of the screen, and a notch portion of each dot is arranged on the diagonal line. Therefore, the display device described in Patent Document 2 is not isotropic in terms of the dot arrangement of the same color, and stripes (stripes) are recognized in an oblique direction corresponding to the dot arrangement when displaying an image. Sometimes. That is, for all color dots, there is a direction from the upper right to the lower left of the screen, and this direction may not be canceled by the presence of the notch. Therefore, even the display device described in Patent Document 2 has a problem in that the appearance of the display image may be hindered.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a color image display device and an electronic apparatus capable of displaying a color image having a good appearance.
The present invention also has a wide color reproduction range and can avoid arranging dots (pixels) of the same color in the vertical direction, horizontal direction, and diagonal direction of the screen, so that a high-quality color image can be obtained. It is an object of the present invention to provide a color image display device and an electronic device that can be displayed.

In order to achieve the above object, a color image display device of the present invention is a color image display device having unit pixels composed of four rectangular dots, which is a component of the unit pixel and is a first element pixel. A first dot that displays a color, a second dot that is a component of the unit pixel and displays a second color, and a third dot that is a component of the unit pixel and displays a third color; , And a fourth dot that displays a fourth color, and the four dots forming the unit pixel are arranged in a square shape, and the second dot and the second dot The four dots display colors that are correlated with each other, and are arranged at diagonal positions in the square shape formed by the unit pixels, and the second dots are the corners arranged in the vicinity of the fourth dots and the pairs thereof. It is a shape that has a notch cut out from the corner, Serial fourth dots are characterized by a shape having a cutout portion formed by cutting the two corners adjacent to the corner is disposed in the vicinity of the second dot.
In order to achieve the above object, a color image display device of the present invention is a color image display device having unit pixels composed of a plurality of dots, and is a component of the unit pixel and displays a first color. A first dot, a second dot that is a component of the unit pixel and displays a second color, and a third dot that is a component of the unit pixel and displays a third color; One dot in the first to third dots is composed of two dots including a sub first dot and a sub second dot, and the sub first dot and the sub second dot are shapes formed by the unit pixel. It is arrange | positioned at the diagonal in.
According to the present invention, each of two colors in the three primary colors can be represented by one dot, and the other one of the three primary colors can be represented by two dots to be a unit pixel. Therefore, the present invention provides a mixing ratio between the color represented by two dots and another color (for example, the ratio of the amount of light between green light and blue light, or the amount of light between green light and red light). Ratio) can be expanded, and a wider color expression can be achieved. Therefore, the color image display device of the present invention can expand the color space and enhance the color reproducibility compared with the case where the three primary colors are represented by three dots. Furthermore, according to the present invention, since two dots of the same color are arranged diagonally in a shape (for example, a rectangular shape) formed by unit pixels, the dots of the same color are continuous in the vertical and horizontal directions of the screen. You can avoid that. Therefore, the color image display device of the present invention can display a color image with good appearance.

In the color image display device of the present invention, the first color is red, the second color is green, the third color is blue, and the second dot is the sub-second color. It is preferable that the first sub-dot and the second sub-dot both display one green color.
In the unit pixel in the present invention, red and blue in the three primary colors are each represented by one dot, and green is represented by two dots. Therefore, for example, the present invention can widen the variable range of the ratio between the green light amount and the blue light amount and the ratio between the green light amount and the red light amount for each unit pixel, thereby enabling wider color expression. can do. Therefore, the color image display device of the present invention can expand the color space compared to the case where three dots represent the three primary colors, can improve color reproducibility, and can display a good-looking image. .

In order to achieve the above object, a color image display device of the present invention is a color image display device having unit pixels composed of a plurality of dots, and is a component of the unit pixel and displays a first color. A first dot, a second dot that is a component of the unit pixel and displays a second color, a third dot that is a component of the unit pixel and displays a third color, and the unit pixel The second dot is a sub first dot, and the fourth dot is correlated with the display color of the sub first dot. The second dot and the fourth dot are arranged diagonally in the shape formed by the unit pixel.
The fourth color may be a cyan color.
The fourth dot (sub-second dot G2) in the present invention is another color having a correlation with the display color of the second dot (sub-first dot G1). This generally means that the peak wavelength of the display color of the fourth dot is close to the peak wavelength of the display color of the second dot when the wavelength characteristic of light is expressed as a spectral sensitivity curve. That is, the peak wavelength of the fourth dot is preferably closer to the peak wavelength of the second dot than the peak wavelength of the first dot or the third dot. The cyan color can be, for example, light having a peak wavelength of 490 nm to 520 nm.
According to the present invention, since the unit pixel is composed of four color dots, the color space can be expanded as compared with the case where the unit pixel is composed of three color (for example, RGB) dots. Therefore, the color image display device of the present invention can improve color reproducibility. Furthermore, according to the present invention, since two dots of different correlated colors (for example, green and cyan) are arranged diagonally in a shape (for example, a rectangular shape) formed by unit pixels, the vertical direction of the screen and It can be avoided that dots of the same color are recognized in the horizontal direction. In the color image display device of the present invention, dots of the same color are not continuous even in the diagonal direction of the screen. Therefore, the color image display device of the present invention can avoid the occurrence of striped patterns in the vertical and horizontal directions of the screen, and can display an image with good appearance.

In the color image display device of the present invention, the first color is red, the second color is green, the third color is blue, and the fourth color is cyan. Preferably there is.
According to the present invention, various colors can be expressed by using four primary colors of red, green, blue, and cyan, and the color space that can be expressed can be expanded as compared with a display device of three primary colors. Therefore, the color image display device of the present invention can display an image with high color reproducibility.

In the color image display device of the present invention, the unit pixel is composed of four dots, and the four dots forming the unit pixel are arranged so as to surround one point, and have a square shape. It is preferable to do it. Each of the four dots constituting the unit pixel has a rectangular shape, and preferably has the same or almost the same shape.
According to the present invention, the unit pixel is composed of four dots arranged like a square, so that each unit pixel can be arranged easily and precisely regularly, and the aperture ratio is improved easily. Can be made. Furthermore, according to the present invention, since two dots of the same color are arranged diagonally in the rectangular shape formed by the unit pixels, it is possible to avoid the dots of the same color being continuous in the vertical and horizontal directions of the screen. . Therefore, the color image display device of the present invention can display an image with better appearance.

In the color image display device of the present invention, the sub first dot and the sub second dot have a shape having a cutout portion formed by cutting out at least one corner of the rectangular shape, and the sub first dot and the sub second dot It is preferable that the notches are arranged in the vicinity of the second dot.
According to the present invention, the notch is present between the sub first dot and the sub second dot that are arranged adjacent to each other on a rectangular diagonal line formed by the unit pixels. Therefore, according to the present invention, it is possible to prevent the dots having the same color (or similar colors) from continuing in the diagonal direction of the screen by the cutout portion. Therefore, the color image display device of the present invention can avoid the formation of stripes in the oblique direction, the vertical direction, and the horizontal direction, and can display an image with better appearance.

In the color image display device of the present invention, it is preferable that the position of the notch portion in the sub first dot is different from the position of the notch portion in the sub second dot.
According to the present invention, for example, it is possible to avoid the proximity of dots of the same color (or another correlated color) in the diagonal direction from the upper left to the lower right on the screen by the notch portion of the sub first dot. In the oblique direction from the upper right to the lower left on the screen, it is possible to avoid the proximity of dots of the same color (or other correlated colors) by the notch portion of the secondary second dot. Therefore, according to the present invention, the image quality hindrance is caused by continuous dots of the same color (or another correlated color) in both the diagonal direction from the upper left to the lower right and the diagonal direction from the upper right to the lower left on the screen. Can be avoided by the notch. Therefore, the color image display device of the present invention can more highly avoid the occurrence of stripes in the oblique direction, the vertical direction, and the horizontal direction, and can display an image with better appearance.

In the color image display device of the present invention, it is preferable that the notch portion of the sub first dot and the notch portion of the sub second dot are not arranged near the center of the rice field. In the color image display device of the present invention, in the sub first dot and the sub second dot, the notch portion arranged in the vicinity of the center of the rice field is arranged in the vicinity of the outer edge of the rice field. It is good also as a notch of a small shape compared with the said notch part currently made.
According to the present invention, since the notch is not arranged near the center of the unit pixel composed of four dots arranged in a square shape, the visual connectivity of the four dots is improved. Thus, the visual connectivity between a certain unit pixel and the adjacent unit pixel can be reduced. Here, the visual connectivity is a degree of whether a certain dot and an adjacent dot (or a certain unit pixel and an adjacent unit pixel) look together or appear separately. It is assumed that the visual connectivity is lower as the degree of being seen separately is higher. Therefore, the present invention can improve the visual connectivity for each unit pixel and reduce the visual connectivity between adjacent unit pixels, so that it is possible to display a good-looking color image.

In order to achieve the above object, an electronic apparatus according to the present invention includes the color image display device.
ADVANTAGE OF THE INVENTION According to this invention, the electronic device which can display a good-looking color image can be provided.

A color image display device according to an embodiment of the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a plan view showing a dot (pixel) shape and a dot arrangement in the color image display device according to the first embodiment of the present invention. In the color image display apparatus 101 of the present embodiment, unit pixels 10 composed of four dots are arranged vertically and horizontally like a grid. The unit pixel 10 is composed of four dots, each consisting of one first dot 11, two second dots (12a, 12b), and one third dot 13, as a group of display units. Is. Here, the second dots (12a, 12b) are sub first dots 12a arranged at the upper right corner of the rectangle formed by the unit pixels 10, and sub second dots 12b arranged at the lower left corner of the rectangle. It consists of In other words, the sub first dots 12 a and the sub second dots 12 b are arranged diagonally in a rectangle formed by the unit pixels 10.

  For example, the first dot 11 is a pixel that displays red (R), which is the first color. The second dots (12a, 12b) are pixels that display the second color, green (G). That is, both the sub first dot 12a and the sub second dot 12b are pixels that display green. The third dot 13 is a pixel that displays blue (B), which is the third color. The display colors of the first to third dots 11, 12a, 12b, and 13 are preferably the above colors, but are not limited to this color.

  Further, the first to third dots 11, 12a, 12b, and 13 constituting the unit pixel 10 are each rectangular and have substantially the same shape. The rectangular shape is preferably a square, but may be a rectangle. The four dots (first to third dots 11, 12a, 12b, 13) constituting the unit pixel 10 are arranged so as to surround one point, and form a square shape.

  Thus, according to the color image display apparatus 101 of the present embodiment, in the unit pixel 10, R and B in the three primary colors of RGB are displayed with one dot, and G is displayed with two dots. Can do. Here, for each of the four dots (first to third dots 11, 12 a, 12 b, 13) forming the unit pixel 10, it is assumed that the stage (luminance resolution) in which the light amount (or luminance) can be varied is the same. . Then, the variable range of G brightness that can be displayed with two dots is twice the variable range of R or B brightness displayed with one dot. Therefore, according to the color image display apparatus 101 of the present embodiment, the mixing ratio of G and B and the G and R for each unit pixel 10 as compared with the apparatus that displays the three primary colors of RGB with three dots. The variable range of the mixing ratio can be expanded, and a wider color expression can be achieved.

  Furthermore, according to the color image display apparatus 101 of the present embodiment, both the green sub first dots 12 a and the sub second dots 12 b are arranged diagonally of the unit pixel 10. Therefore, this color image display apparatus 101 can avoid the dots of the same color being continuous in the vertical direction and the horizontal direction of the screen. Therefore, the color image display apparatus 101 can display a color image having a good appearance. In the color image display device 101, both the green sub first dots 12a and the sub second dots 12b are arranged so as to be continuous in the oblique direction of the screen. However, by controlling the luminance of only the sub first dots 12a and the sub second dots 12b, it is possible to easily avoid the occurrence of a striped pattern in the diagonal direction of the screen. As a result, the color image display apparatus 101 of the present embodiment can display a color image with better appearance while having a simple configuration.

(Second Embodiment)
FIG. 2 is a plan view showing the dot shape and dot arrangement in the color image display device according to the second embodiment of the present invention. Similar to the color image display device 101 of the first embodiment, the color image display device 102 of the present embodiment has unit pixels 20 that are arranged vertically and horizontally like a grid of dots. However, unlike the unit pixel 10 of the first embodiment, the unit pixel 20 displays different colors for the four dots of the constituent elements.

  Specifically, one first dot (R) 21, one second dot (G1) 22, one third dot (B) 23, and one fourth dot (G2). The unit pixel 20 is configured by four dots consisting of 24 as a group of display units.

  For example, the first dot 21 is a pixel that displays red (R), which is the first color. The second dot 22 is a pixel that displays green (G) as the second color. The third dot 23 is a pixel that displays blue (B), which is the third color. The fourth dot 24 is a pixel that displays cyan (C) as the fourth color. The display colors of the first to fourth dots 21, 22, 23, and 24 are preferably set to the above colors, but are not limited to these colors.

  More specifically, for example, when the wavelength characteristic of light is expressed as a spectral sensitivity curve, the peak wavelength of the first dot (red) 21 is 640 nm, the peak wavelength of the second dot (green) 22 is 550 nm, The peak wavelength of the dot (blue) 23 may be 470 nm, and the peak wavelength of the fourth dot (cyan) may be 500 nm. Then, the interval between the peak wavelengths of the second dots 22 and the fourth dots 24 is 50 nm. On the other hand, the peak wavelength interval between the second dot and the first dot is 90 nm, and the peak wavelength interval between the second dot and the third dot is 80 nm. As described above, the second dot 22 (sub first dot G1) and the fourth dot 24 (sub second dot G2) have different peak wavelengths and display different colors that are correlated with each other. Further, the second dots 22 and the fourth dots 24 are arranged at diagonal angles in the rectangular shape formed by the unit pixels 20, and correspond to the sub first dots G1 and the sub second dots G2 of the present invention.

  In addition, the first to fourth dots 21, 22, 23, and 24 constituting the unit pixel 20 are each rectangular and have substantially the same shape. The rectangular shape is preferably a square, for example, but may be a rectangle. The four dots (first to fourth dots 21, 22, 23, and 24) constituting the unit pixel 20 are arranged so as to surround one point, and form a square shape.

  As a result, according to the color image display device 102 of the present embodiment, the unit pixel 20 is composed of four color dots of RGBC, so that the color space is expanded compared to the case where the unit pixel is composed of three color dots. Can do. Thus, according to the present embodiment, the color reproduction range can be expanded, and a color image display device with higher image quality than that of the first embodiment can be provided.

  Furthermore, according to the color image display device 102 of the present embodiment, the second dot 22 and the fourth dot 24 arranged diagonally in the unit pixel 20 display correlated colors and different colors, so that the screen The dots of the color recognized in the same way in the vertical and horizontal directions are not continuous. Therefore, the color image display apparatus 102 can highly avoid the occurrence of striped patterns in the vertical and horizontal directions of the screen. Furthermore, since the same color dots are continuous in the diagonal direction, the color image display device 102 can reduce the occurrence of a striped pattern in the diagonal direction of the screen and display an image with a wide color reproduction range and a good appearance. can do.

(Third embodiment)
FIG. 3 is a plan view showing a dot shape and a dot arrangement in the color image display device according to the third embodiment of the present invention. The difference between the present embodiment and the first embodiment is that the sub first dots 32a and the sub second dots 32b in the four dots constituting the unit pixel 30 of the present embodiment are notched portions K1a, K1b, K2a, respectively. , K2b. In other respects, the color image display device 103 of the present embodiment shown in FIG. 3 is the same as the color image display device 101 of the first embodiment shown in FIG. In other words, the color image display device 103 according to the present embodiment has notches K1a, K1b, K2a, and the like with respect to the shapes of the sub first dots 12a and the sub second dots 12b in the color image display device 101 according to the first embodiment. K2b is provided.

  Next, this embodiment will be described more specifically. In the color image display apparatus 103 according to the present embodiment, unit pixels 30 composed of four dots are arranged vertically and horizontally like a grid. The unit pixel 30 is configured as a group of display units of four dots including one first dot 31, two second dots (32a, 32b), and one third dot 33. Is. Here, the second dots (32a, 32b) are sub first dots 32a arranged at the upper right corner of the rectangle formed by the unit pixels 30, and sub second dots 32b arranged at the lower left corner of the rectangle. It consists of In other words, the sub first dots 32 a and the sub second dots 32 b are arranged diagonally in a rectangle formed by the unit pixels 30.

  For example, the first dot 31 is a pixel that displays red (R), which is the first color. The second dots (32a, 32b) are pixels that display the second color, green (G). That is, both the sub first dot 32a and the sub second dot 32b are pixels that display green. The third dot 33 is a pixel that displays blue (B) as the third color. The display color of the first to third dots 31, 32a, 32b, and 33 is preferably the above color, but is not limited to this color.

  Next, the shape of each dot, which is a feature of this embodiment, will be described. The first dots 31 and the third dots 33 are each rectangular and have substantially the same shape. The rectangular shape is preferably a square, but may be a rectangle.

  The sub first dots 32a have a rectangular shape in which an upper left corner and a lower right corner (diagonal corner) are cut out. That is, the sub first dot 32a has a cutout portion K1a at the upper left portion of the rectangular shape, and has a cutout portion K1b at the lower right portion that is the diagonal. The sub-second dot 32b has a rectangular shape in which an upper right corner and a lower left corner (diagonal corner) are cut out. That is, the sub second dot 32b has a cutout portion K2a in the upper right portion of the rectangular shape, and has a cutout portion K2b in the lower left portion that is the diagonal.

  As described above, the notch portions K1a and K1b of the sub first dot 32a and the notch portions K2a and K2b of the sub second dot 32b are the target positions (with reference to the horizontal line passing through the center of the dot shape ( (Reverse position). The cutout portion K2b (or the cutout portions K1a, K1b, K2a) exists between the sub first dots 32a and the sub second dots 32b of the same color. In addition, the four dots (first to third dots 31, 32a, 32b, 33) constituting the unit pixel 30 are arranged so as to surround one point, and form a square shape.

  Thus, according to the color image display device 103 of the present embodiment, between the sub first dots 32a and the sub second dots 32b arranged so as to be adjacent to each other on the rectangular diagonal line formed by the unit pixels 30, One notch K1a, K1b, K1b, K2a is arranged. Therefore, the color image display apparatus 103 according to the present embodiment indicates that the same color dots (sub first dots 32a and sub second dots 32b) continue from the upper left to the lower right of the screen at the cutout portions K1a and K1b. The cutout portions K2a and K2b can prevent the same color dots from continuing from the upper right to the lower left of the screen. Therefore, the color image display apparatus 103 according to the present embodiment can avoid the generation of stripes in the oblique direction, the vertical direction, and the horizontal direction, and can display an image with better appearance.

  FIG. 4 is a plan view showing another example in the third embodiment of the present invention. The color image display device 104 according to this example is configured so that the shapes of the sub first dots 32a and the sub second dots 32b shown in FIG. 3 are the sub first dots G1 of the color image display device 104 of the second embodiment shown in FIG. This is applied to the second dot 22) and the sub-second dot G2 (fourth dot 24).

  That is, the unit pixel 40 in the color image display device 104 corresponds to the unit pixel 30 in FIG. The unit pixel 40 includes, for example, a first dot 41 that displays red (R), a second dot 42 that displays green (G, G1), a third dot 43 that displays blue (B), and cyan (C, G2). It is comprised by the 4th dot 44 which displays. Here, the shape of the first dot 41 is the same as the first dot 31 of FIG. The shape of the second dot 42 is the same as that of the sub-first dot 32a of FIG. 3, and has notches K1a and K1b. The shape of the third dot 43 is the same as that of the third dot 33 in FIG. The shape of the fourth dot 44 is the same as that of the sub second dot 32b of FIG. 3, and has notches K2a and K2b.

  Thus, according to the color image display device 104 of the present embodiment, the second dots 42 and the second dots 42 that are arranged adjacent to each other on the rectangular diagonal line formed by the unit pixels 40 and display different colors are correlated. One notch K1a, K1b, K1b, K2a is arranged between the four dots 44. Therefore, in the color image display device 104 according to the present embodiment, two color dots (sub first dot G1 and sub second dot G2) having relatively close peak wavelengths in the spectral sensitivity curve are moved from the upper left to the lower right of the screen. The cutouts K1a and K1b can prevent continuity, and the cutouts K2a and K2b prevent the two color dots having relatively close peak wavelengths from continuing from the upper right to the lower left of the screen. Can be prevented. Therefore, the color image display device 104 of the present embodiment can widen the color reproduction range, can highly avoid the occurrence of stripes in the oblique direction, the vertical direction, and the horizontal direction, and displays a more attractive image. can do.

  FIG. 5 is a plan view showing another shape of the notch in the present embodiment. The dots 51 shown in FIG. 5A and the dots 52 shown in FIG. 5B correspond to the sub second dots 32b in FIG. 3 or the fourth dots 44 in FIG. That is, the dots 51 and 52 are modified examples of the shape of the cutout portions in the sub second dots 32 b and the fourth dots 44.

  The dot 51 is a first modification of the notch. The dots 51 have a shape having notches K3a and K3b at diagonal corners of the rectangular shape. The notches K3a and K3b have curved contours. This curve has a convex shape outward from the center of the dot 51.

  The dot 52 is a second modification of the notch. The dots 52 have a shape having notches K4a and K4b at diagonal corners of the rectangular shape. The contours of the notches K4a and K4b are linear, but the notch K4a has a shape that is larger than the notch K4b. Here, the shape of the cutout portion K4b may be larger than the cutout portion K4a.

  5 is applied to the sub first dots 32a in FIG. 3 and the second dots 42 in FIG. 4 by changing the positions of the notches in the dots 51 and 52. In FIG. You can also. In addition, in the past, an invention has been proposed in which the shape of a pixel such as a color filter is not rectangular but a corner is notched, but the conventional technique prevents variation in shape due to processes such as etching. Is for. Therefore, the conventional notched shape does not exhibit the same operation and effect as the notched portion of the present embodiment in which the corner portion of a specific color dot is notched.

  In FIGS. 3 and 4, for example, a scanning line may be arranged in each of the gaps that form gaps between the dots and are continuous in the horizontal direction of the screen. This scanning line may be connected to the gate electrode of the TFT in the same row among drive elements (for example, TFT: Thin Film Transistor) provided for each dot. In FIGS. 3 and 4, for example, a signal line may be arranged in each of the gaps that form gaps between the dots and are continuous in the vertical direction of the screen. This signal line may be connected to the source (or drain) of the TFT in the same column among the TFTs provided for each dot.

  In FIGS. 3 and 4, TFTs that drive the dots or storage capacitors are provided in portions (corner regions where the notches are provided) facing the contours of the notches K1a, K1b, K2a, and K2b. An electrode or the like may be arranged. As a result, the entire area of the screen including the corner area provided with the cutout can be effectively used. For example, the shape of the pixel electrode and the shape of the pixel of the color filter can be approximated. The aperture ratio can be increased.

  In the above case, the TFTs and the storage capacitor electrodes provided in the corner regions where the cutouts are provided are limited to the TFTs and storage capacitor electrodes for the pixel electrodes of the dots corresponding to the cutout portions. Instead, a TFT or a storage capacitor electrode for a pixel electrode of a dot adjacent to the dot may be used. For example, in FIG. 4, the TFT and the storage capacitor electrode formed in the region of the cutout portion K1a of the second dot 42 are the TFT and the storage capacitor electrode for driving the first dot 41. The TFT and the storage capacitor electrode formed in the region of the notch K1b may be a TFT and a storage capacitor electrode for driving the second dot 42.

(Fourth embodiment)
FIG. 6 is a plan view showing a dot shape and a dot arrangement in the color image display device according to the fourth embodiment of the present invention. FIG. 6A shows a unit pixel 60 of the color image display device according to the first example of the present embodiment. The difference between the unit pixel 60 of the present embodiment and the unit pixels 30 and 40 of FIG. 3 or 4 is that the vicinity of the center in the shape of the rice field formed by the four dots 61, 62, 63, and 64 constituting the unit pixel 60. Is that no cut-out portion is arranged.

  Specifically, in the unit pixel 60, the dot 61 corresponds to the first dot 31 in FIG. 3 and the first dot 41 in FIG. 4, and has the same shape as the first dot 31 and the first dot 41. . The dots 62 correspond to the sub first dots 32 a in FIG. 3 and the second dots 42 in FIG. 4, and have the same shape as the sub first dots 32 a and the second dots 42. Therefore, the dot 62 has two notches K5a and K5b arranged diagonally. The dots 63 correspond to the third dots 33 in FIG. 3 and the third dots 43 in FIG. 4, and have the same shape as the third dots 33 and the third dots 43.

  The dots 64 correspond to the sub second dots 32b in FIG. 3 and the fourth dots 44 in FIG. 4, but are different in shape from the sub second dots 32b and the fourth dots 44. That is, the sub second dot 32b and the fourth dot 44 have two cutout portions K2a and K2b, but the dot 64 of the present embodiment has only one cutout portion K6. In other words, the unit pixel 60 of the present embodiment has a configuration in which the notch K2b is not provided in the unit pixels 30 and 40 of the third embodiment. Further, the second dot 62 and the fourth dot 64 may have the same display color (for example, green), or may have different colors (for example, green and cyan) with which the display colors are correlated.

  As a result, according to the present embodiment, the cutout portion is not arranged near the center of the unit pixel 60 composed of the four dots 61, 62, 63, 64 arranged in the square shape. The visual connectivity of each dot can be increased, and the visual connectivity between a certain unit pixel 60 and the adjacent unit pixel 60 can be reduced. In other words, when the unit pixel 60 is desired to be displayed as a single unit, the visual connectivity of the dots 61, 62, 63, 64 can be improved, and the visual relationship between a certain unit pixel 60 and the adjacent unit pixel 60 can be improved. Connectivity can be reduced. Therefore, the color image display apparatus according to the present embodiment can display a color image having a good appearance.

  Further, in FIG. 6A, the dot 64 is configured such that no notch is provided at the diagonal of the notch K6 in the dot 64, but from the notch K6 at the diagonal of the notch K6 in the dot 64. Alternatively, a small notch may be provided. Even with such a configuration, when it is desired to display the unit pixel 60 as a single unit, the visual connectivity of the dots 61, 62, 63, 64 can be improved. The visual connectivity with can be reduced.

  FIG. 6B shows a unit pixel 70 of the color image display device according to the second example of the present embodiment. The difference between the unit pixel 70 of this embodiment and the unit pixels 30 and 40 of FIG. 3 or 4 is that each of the four dots 71, 72, 73, and 74 constituting the unit pixel 70 has a notch. It is a point.

  Specifically, in the unit pixel 70, the dot 71 corresponds to the first dot 31 in FIG. 3 and the first dot 41 in FIG. 4, but the shape is different from the first dot 31 and the first dot 41. . That is, the first dot 31 and the first dot 41 do not have a notch, but the dot 71 has two notches K9a and K9b. The dots 72 correspond to the sub first dots 32 a in FIG. 3 and the second dots 42 in FIG. 4, and have the same shape as the sub first dots 32 a and the second dots 42. The dot 72 has two notches K7a and K7b. The dots 73 correspond to the third dots 33 in FIG. 3 and the third dots 43 in FIG. 4, but are different in shape from the third dots 33 and the third dots 43. That is, the third dot 33 and the third dot 43 do not have a cutout portion, but the dot 73 has two cutout portions K10a and K10b. The dots 74 correspond to the sub second dots 32b in FIG. 3 and the fourth dots 44 in FIG. 4, and have the same shape as the sub second dots 32b and the fourth dots 44. The dot 74 has two notches K8a and K8b.

  Further, the two notches K9a and K9b in the dot 71 are arranged on the diagonal line of the dot 71. However, the diagonal line in which the cutout portions K9a and K9b are arranged has a direction 180 degrees different from the diagonal line in which the cutout portions K10a and K10b are arranged in the dot 73. Further, the second dot 72 and the fourth dot 74 may have the same display color (for example, green), or may have different colors (for example, green and cyan) with which the display colors are correlated.

  As described above, in the present embodiment, the four dots 71, 72, 73, 74 arranged in a square shape in the unit pixel 70 each have two cutout portions. However, when the dots 71 and 73 and the dots 72 and 74 arranged diagonally in the unit pixel 70 are compared, the positions where the notches are provided in the dots are different. That is, in the dots 71 and 74, notches are provided in the upper right corner and the lower left corner of the dot, but in the dots 72 and 73, the upper left corner and the lower right corner of the dot are provided. Notches are provided. In other words, as shown in FIG. 6B, when the dots 71 and 72 that are continuous in the horizontal direction of the screen are viewed, the corner portions where the notched portions are present (or not) are at most two ( K9b, K7a), and when dots 71 and 74 (or dots 72 and 73) that are continuous in the vertical direction of the screen are viewed, the corners where the cutouts are present are not continuous, and dots that are continuous in the diagonal direction of the screen Looking at 71 and 73 (or dots 72 and 74), the corners where the notches are present are not continuous. As a result, according to the color image display device of the present embodiment, it is possible to avoid the occurrence of stripes in the vertical, horizontal, and diagonal directions of the screen, and to display a color image with good appearance.

(About the effect of this embodiment)
FIG. 7 is a plan view showing a stripe-type dot shape and dot arrangement in a conventional color image display device. FIG. 8 is a plan view showing a delta type dot shape and dot arrangement in a conventional color image display device. In the stripe type, dots of the same color are continuous in the vertical direction (or horizontal direction). In the delta type, dots of the same color are continuous in an oblique direction. Therefore, the stripe-type and delta-type color image display devices have a disadvantage that a striped pattern can be seen along the direction in which dots of the same color are arranged.

  According to the color image display device according to the first to fourth embodiments, it is possible to avoid the dots of the same color from being continuous. Therefore, it is possible to avoid the appearance of the stripe pattern and display a good-looking color image. it can. Further, according to the color image display device according to the third and fourth embodiments, since the notch portions are provided irregularly, for example, the shape of the black matrix forming the light shielding portion can be made irregular, The appearance of striped patterns can be avoided to a higher degree.

(Electronics)
Next, an electronic apparatus having the color image display device of the above embodiment as a component will be described.
FIG. 9A is a perspective view showing an example of a mobile phone. In FIG. 9A, reference numeral 600 indicates a mobile phone body, and reference numeral 601 indicates a display unit including the color image display device of the above embodiment. FIG. 9B is a perspective view illustrating an example of a portable information processing apparatus such as a word processor or a personal computer. In FIG. 9B, reference numeral 700 denotes an information processing apparatus, reference numeral 701 denotes an input unit such as a keyboard, reference numeral 702 denotes a display unit including the color image display apparatus of the above embodiment, and reference numeral 703 denotes an information processing apparatus main body. . FIG. 9C is a perspective view showing an example of a wristwatch type electronic device. In FIG. 9C, reference numeral 800 denotes a watch body, and reference numeral 801 denotes a display unit including the color image display device of the above embodiment.

  Since the electronic device shown in FIG. 9 includes the color image display device of the above-described embodiment, the color reproduction range is wide, unnecessary connection of colors can be prevented, and a high-quality color image that looks good is displayed. be able to.

  The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention, and the specific materials and layers mentioned in the embodiment can be added. The configuration is merely an example, and can be changed as appropriate.

  The color image display device according to the present invention can be applied to a liquid crystal display device, an organic EL display device, a plasma display device, a projector, and the like.

It is a top view of the principal part of the color image display apparatus which concerns on 1st Embodiment of this invention. It is a top view of the principal part of the color image display apparatus which concerns on 2nd Embodiment of this invention. It is a top view of the principal part of the color image display apparatus which concerns on 3rd Embodiment of this invention. It is a top view of the other example of the color image display apparatus which concerns on 3rd Embodiment of this invention. It is a top view which shows the other example of the notch part in embodiment same as the above. It is a top view of the principal part of the color image display apparatus which concerns on 4th Embodiment of this invention. It is a top view which shows a stripe-type color image display apparatus. It is a top view which shows a delta type color image display apparatus. It is a perspective view which shows the electronic device which concerns on embodiment of this invention.

Explanation of symbols

10, 20, 30, 40, 60, 70 ... unit pixel, 11, 21, 31, 41 ... first dot, 12a, 32a ... sub first dot, 12b, 32b ... sub second dot, 13, 23, 33 , 43 ... 3rd dot, 21, 42 ... 2nd dot, 24, 44 ... 4th dot, 51, 52, 61, 62, 63, 64, 71, 72, 73, 74 ... dot, 101, 102, 103 104, a color image display device, K1a, K1b, K2a, K2b, K3a, K3b, K4a, K4b, K5a, K5b, K6, K7a, K7b, K8a, K8b, K9a, K9b, K10a, K10b ... notch

Claims (5)

A color image display device having unit pixels composed of four rectangular dots,
A first dot that is a component of the unit pixel and displays a first color;
A second dot that is a component of the unit pixel and displays a second color;
A third dot that is a component of the unit pixel and displays a third color;
A fourth dot that is a component of the unit pixel and displays a fourth color;
The four dots forming the unit pixel are arranged in a square shape,
Wherein the second dot fourth dots, and displays a color having a correlation with each other physician, is arranged diagonally in the shape of the field in which the unit pixel forms,
The second dot has a shape having a cutout portion formed by cutting out a corner disposed in the vicinity of the fourth dot and a diagonal corner thereof,
The fourth dot is a color image display device comprising a shape der Rukoto having notches formed by cutting the two corners adjacent to the corner is disposed in the vicinity of the second dot. The first color is red;
The second color is green;
The third color is blue;
The color image display device according to claim 1, wherein the fourth color is green . The first color is red;
The second color is one of green and cyan .
The third color is blue;
The color image display device according to claim 1 , wherein the fourth color is the other of green and cyan . In the second dot , the cutout portion arranged near the center of the rice field is a cutout having a smaller shape than the cutout portion arranged near the outer edge of the rice field. The color image display device according to claim 1 , wherein the color image display device is provided. An electronic apparatus comprising the color image display device according to claim 1 .

Images