Transparent and Self Illuminated Shader

Hi everyone !

I don't know if this question was already written. I'm really sorry if the thread already exists...

Anyway!
I'm currently working on a student project with 3d interfaces (like Dead Space) and I'm looking for a shader with a self illumination (to read clearly the PNG pictures, without any other lights) and with a very good transparence aspect (to see through 3d screens).
I was working with this shader until now :

Code (csharp):

1. Shader "AlphaSelfIllum" {
2.     Properties {
3.         _Color ("Color Tint", Color) = (1,1,1,1)
4.         _MainTex ("SelfIllum Color (RGB) Alpha (A)", 2D) = "white"
5.     }
6.     Category {
7.        Lighting On
8.        ZWrite Off
9.        Cull Back
10.        Blend SrcAlpha OneMinusSrcAlpha
11.        Tags {Queue=Transparent}
12.        SubShader {
13.             Material {
14.                Emission [_Color]
15.             }
16.             Pass {
17.                SetTexture [_MainTex] {
18.                       Combine Texture * Primary, Texture * Primary
19.                 }
20.             }
21.         }
22.     }
23. }

The self illumination is good enough I think, but the transprent is awful. This shader considers that the whole picture is a little bit transparent, so all the colors of my PNG picture become dull and slightly transparent.

What can I do to improve this shader?

Thank you for your help

(Ps: Sorry for my english, I'm french )

 

Thanks alot! I needed this

 

Bump, I have the same problem with a shader. Everything is always partly transparent.