Display panel and method of manufacturing the same
View Patent ↗A display panel includes a base material that transmits light, a groove portion defined in a back surface of the base material and defined corresponding to a display pattern that is displayed on a front surface side of the base material, a light-blocking film, formed on the back surface where the groove portion is not defined and on a side surface of the groove portion, that blocks light through the back surface, a light-transmissive region that includes a region on an upper surface of the groove portion where the light-blocking film is not formed and that transmits light, and a metal film formed in at least the light-transmissive region.
1. A display panel, comprising:
a base material that transmits light and that is formed in a plate shape;
a groove portion defined in a back surface of the base material and defined corresponding to a display pattern that is displayed on a front surface side of the base material;
a light-blocking film, formed on the back surface where the groove portion is not defined and on a side surface of the groove portion, that blocks light through the back surface;
a light-transmissive region that comprises a region on an upper surface of the groove portion where the light-blocking film is not formed and that transmits light; and
a metal film formed in at least the light-transmissive region,
wherein the metal film overlies the light-blocking film, and is of such a thickness that it transmits light,
wherein the light-blocking film is configured to reduce an intensity of light transmitted therethrough, and
wherein the light-blocking film is configured to have a light transmittance of not more than 1%.
2. The display panel according to claim 1 , wherein the light-blocking film suppresses reflection of light entering through the front surface side of the base material.
3. The display panel according to claim 1 , wherein the light-blocking film is formed covering an entirety of the side surface of the groove portion.
4. The display panel according to claim 1 , wherein the upper surface of the groove portion is parallel to a front surface of the base material.
5. The display panel according to claim 1 , wherein the metal film on the light-transmissive region is more than a half of a thickness of the base material away from the light-blocking film on the back surface.
6. The display panel according to claim 1 , wherein the light-blocking film is formed covering only one or more side surfaces of the groove portion.
7. The display panel according to claim 1 , wherein the light-blocking film is formed covering an entirety of opposing side surfaces of the groove portion.
8. A method of manufacturing a display panel, comprising:
defining a groove portion in a back surface of a base material corresponding to a display pattern, the base material being formed in a plate shape;
forming a light-blocking film that blocks light on the back surface and on the groove portion by applying a material of the light-blocking film to the back surface such that the light-blocking film covers an entirety of the back surface;
forming a light-transmissive region that transmits light by removing the light-blocking film on an upper surface of the groove portion; and
forming a metal film in at least the light-transmissive region of such a thickness that it transmits light,
wherein the light-blocking film is configured to reduce an intensity of light transmitted therethrough, and
wherein the light-blocking film is configured to have a light transmittance of not more than 1%.