Liquid crystal display apparatus and liquid crystal television

• US 8,879,006 B2
• Filed: 03/12/2012
• Issued: 11/04/2014
• Est. Priority Date: 03/18/2011
• Status: Expired due to Fees

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Watanabe, Mihoko, Shimoda, Hironori
• Primary Examiner(s): Lee, Michael
• Application Number:
  US14/005,768
• Publication Number:
  US 20140002734A1
• Time in Patent Office: 967 Days
• Field of Search: 348/791, 348/453, 348553-558, 348659-661, 348/708, 348/718, 348/790, 345/88, 345/89, 345/674, 345/87
• US Class Current: 348/791
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2340/06 Colour space transformation
• CPC Class Codes: G09G 3/3413 Details of control of colour illumination sources
• CPC Class Codes: G09G 5/04 using circuits for interfacing with colour displays
• CPC Class Codes: G09G 5/366 with conversion of CRT control signals to flat panel control signals, e.g. adapting the palette memory
• CPC Class Codes: H04N 9/30 using solid-state colour display devices
• CPC Class Codes: H04N 9/67 for matrixing camera processing pipelines for matrixing of colour signals H04N23/85

Abstract

There is provided with a color mixing section for mixing yellow to red or green, when red or green is displayed by a liquid crystal television including a liquid crystal panel that has a color filter for four primary colors for red, green, blue and yellow, a backlight that emits light to the liquid crystal panel, and a television signal processing section that converts an inputted color video image signal into signals representing red, green, blue and yellow regarding a color video image.

Claims

1. A liquid crystal display apparatus that includes a liquid crystal panel which has color filters for red, green and blue and a color filter for yellow that includes a backlight which emits light to the liquid crystal panel, that converts an inputted color video image signal into signals representing red, green, blue and the complementary color regarding the color video image, and that displays a color video image based on each converted signal, comprising:

a color mixing section that, mixes the yellow into red or green when red or green is displayed and performs a processing for increasing a signal level of yellow when a signal level of red or green is not smaller than a first signal level and signal levels of other colors are smaller than a second signal level that is smaller than the first signal level.

2. The liquid crystal display apparatus according to claim 1,

wherein an amount for increasing the signal level of yellow when the signal level of green is not smaller than the first signal level is larger than an amount for increasing the signal level of yellow when the signal level of red is not smaller than the first signal level.

3. The liquid crystal display apparatus according to claim 1, further comprising:

an increasing section that, when red or green is displayed, increases the signal level of red or green.

4. The liquid crystal display apparatus according to claim 1, further comprising:

a changing section that, when yellow is displayed, increases the signal levels of red and green and decreases the signal level of yellow.

5. The liquid crystal display apparatus according to claim 1, further comprising:

a composite amount accepting section that accepts a composite amount of yellow,

wherein the color mixing section is configured to perform a processing for increasing the signal level of yellow based on the composite amount accepted by the composite amount accepting section.

10. The liquid crystal display apparatus according to claim 1, claim 6, claim 7, claim 8, or claim 9, further comprising:

a gamma correction processing section that performs a gamma correction processing onto a signal of each color based on a mixing processing performed by the color mixing section.

11. A liquid crystal television, comprising:

a video image receiving section that receives a color video image signal; and

the liquid crystal display apparatus according to claim 1, claim 6, claim 7, claim 8, or claim 9,

wherein the liquid crystal display apparatus is configured to display a color video image based on the color video image signal received by the video image receiving section.

6. A liquid crystal display apparatus that includes a liquid crystal panel which has color filters for red, green, blue, and yellow that includes a backlight which emits light to the liquid crystal panel, which converts an inputted color video image signal into signals representing red, green, blue, and yellow regarding the color video image and that displays a color video image based on each converted signal, comprising:

a color mixing section that mixes yellow into red or green when red or green is displayed; and

a composite necessity accepting section that accepts a necessity of composite,

wherein the color mixing section is configured to perform a processing for mixing yellow when the composite necessity accepting section accepts that the composite is necessary.

7. A liquid crystal display apparatus that includes a liquid crystal panel which has color filters for red, green, blue, and yellow that includes a backlight which emits light to the liquid crystal panel, which converts an inputted color video image signal into signals representing red, green, blue, and yellow regarding the color video image, and that displays a color video image based on each converted signal, comprising:

a color mixing section that mixes yellow into red or green when red or green is displayed;

a display mode accepting section that accepts a switch of display mode; and

a table that stores an amount for mixing yellow to red or green,

wherein the color mixing section is configured to utilize the table for mixing yellow to red or green, when a display mode is switched to a predetermined display mode.

8. A liquid crystal display apparatus that includes a liquid crystal panel which has color filters for red, green and blue and a color filter for at least one complementary color of cyan, magenta and yellow having complementary color relationship to each of red, green and blue, that includes a backlight which emits light to the liquid crystal panel, that converts an inputted color video image signal into signals representing red, green, blue and the complementary color regarding the color video image, and that displays a color video image based on each converted signal, comprising:

a color mixing section that, when red, green or blue of primary color not having complementary color relationship to the complementary color is displayed, mixes the complementary color into red, green or blue of primary color; and

a judging section that judges a type of the color video image,

wherein the color mixing section is configured to perform a mixing processing based on a result of judgment performed by the judging section.

9. A liquid crystal display apparatus that includes a liquid crystal panel which has color filters for red, green and blue and a color filter for at least one complementary color of cyan, magenta and yellow having complementary color relationship to each of red, green and blue, that includes a backlight which emits light to the liquid crystal panel, that converts an inputted color video image signal into signals representing red, green, blue and the complementary color regarding the color video image, and that displays a color video image based on each converted signal, comprising:

a color mixing section that, when red, green or blue of primary color not having complementary color relationship to the complementary color is displayed, mixes the complementary color into red, green or blue of primary color; and

a judging section that judges about a device which is a source sending the color video image signal,

wherein the color mixing section is configured to perform a mixing processing based on a result of judgment performed by the judging section.