JPH0547983U - Color plasma display panel - Google Patents

Abstract

(57) [Abstract] [Purpose] High contrast ratio, improved visibility of displayed characters, and displaying many characters. [Structure] The number of dots per display body 1 is increased, and a part of the dots of the display body 1 is coated with a black paint layer instead of the phosphor 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a color plasma display panel in which a phosphor is applied to the inner wall of a discharge cell for color display, and more particularly to a color plasma display panel having a high contrast ratio and capable of displaying many display character types.

[0002]

[Prior Art]

 The color plasma display panel realizes a color display by applying a UV-excited phosphor to the inner wall of the discharge cell and causing the phosphor to emit light with vacuum ultraviolet rays (147 nm) generated by glow discharge in a sealed gas containing Xe. There is.

[0003]

[Problems to be solved by the device]

FIG. 2 is an explanatory diagram showing a first example of a display body in a conventional panel. Since this display body 1 consists of 7 segments 5 _{1 to} 5 ₇ with the phosphor 3 attached, it can display only numbers and 6 letters of alphabet, so the amount of information is small and it becomes a color plasma display panel with a narrow application range. There is a problem called.

FIG. 3 is an explanatory diagram showing the second example. In this display example 1, a display body of 5 × 7 dots is used in order to increase the types of display characters.₁~ 2 ₃₅ In the case of the display body, since the color of the phosphor 3 of the non-lit dot is white, the contrast ratio of the displayed character is lowered, and the visibility of the displayed character is deteriorated.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the panel of the present invention is a color plasma display panel in which the phosphor 3 is applied to the inner wall of the discharge cell for color display, and the number of dots per display 1 is increased and the display is increased. A black paint layer is applied instead of the phosphor 3 to a part of the dots of 1.

[0006]

[Action]

Many alphanumeric than 7-segment display of FIG. 2 By adopting such a configuration, will be able to view the kana characters, etc., also, the dot black paint layer is lit when displaying character 4 ₁ to 4 ₄ because the framed blackened dots are applied, it is possible to increase the contrast ratio, so that it is possible to improve display character, the visibility of such numbers.

[0007]

【Example】

FIG. 1 is an explanatory view showing one embodiment of the display body in the panel of the present invention. This embodiment and a set part of the display 1, the vertical 2-dot middle side, for example not used for display as well as a number one the number of dots 5 × 7 dot 2 ₁ to 2 ₃₅ per of the display 1 4 sets of dots 2 ₇ , 2 ₁₂ , 2 ₉ , 2 ₁₄ , 2 ₂₂ , 2 ₂₇ and 2 ₂₄ , 2 ₂₉ are provided with black paint layers 4 ₁ to ₄ 4 instead of the phosphor 3.

Since the present embodiment is configured as described above, it is possible to display more alphanumeric characters, kana characters, etc. than the 7-segment display shown in FIG. 2, and dot 2 is displayed when characters are displayed. ₂₁ to _5, 2 _6, 2 _8, 2 _10, 2 _13, 2 _15, 2 ₁₆ to 2 _20, 2 _21, 2 _23, 2 _25, 2 _26, 2 _28, 2 _30, 2 ₃₁ to 2 ₃₅ of, lit dots 2 dots are subjected to a black paint layer ₄₁ to ₄ and _7, 2 _12, 2 _9, 2 _14, 2 _22, 2 ₂₇ and 2 _24, 2 ₂₉ black fringed because the The contrast ratio can be increased, and the visibility of displayed characters, numbers, etc. can be improved.

[0009]

[Effect of the device]

 As described above, according to the present invention, since the contrast ratio of the display can be increased, it is possible to improve the visibility of the displayed characters, numbers, etc., and it is not only easy to see and read the characters, numbers etc. accurately, Since the number of types of display characters can be increased, the amount of information is increased and a display panel with a wide range of applications can be provided.

[Brief description of drawings]

FIG. 1 is an explanatory view showing one embodiment of a display body in a panel of the present invention.

FIG. 2 is an explanatory diagram showing a first example of a display body in a conventional panel.

FIG. 3 is an explanatory diagram showing a second example thereof.

[Explanation of symbols]

1 Display 2 _{1 to} 2 ₃₅ dots 3 Phosphor 4 ₁ to 4 ₄ Black paint layer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Matoba 2-3-13 Toranomon, Minato-ku, Tokyo Kokusai Electric Co., Ltd. (72) Inventor Junichi Uebayashi 2-3-13 Toranomon, Minato-ku, Tokyo No. Kokusai Electric Co., Ltd. (72) Inventor Noriyuki Awaji 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Fujitsu Limited (72) Toshiyuki Minami, 1015, Kamedotachu, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (72) Inventor Shinoda, 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited

Claims (1)

[Scope of utility model registration request] 1. In a color plasma display panel in which a phosphor (3) is applied to the inner wall of a discharge cell for color display, the number of dots per display (1) is increased and the display (1) is increased. A color plasma display panel characterized in that a black paint layer is applied to some of the dots in place of the phosphor (3).